# CVE-2026-58016: Glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"

Status: published. Published: 2026-06-30. Updated: 2026-11-04.

A flaw was found in GLib. A state confusion issue exists in g_dbus_node_info_new_for_xml() in the gio/gdbusintrospection.c file when processing malformed D-Bus introspection XML, specifically with a `node` element nested within other elements like `method`, `signal`, `property` or `arg`. This issue can cause an unsigned integer overflow and lead to an out-of-bounds read, resulting in a denial of service.

## Remediation

- workaround: To mitigate this vulnerability, implement input validation to sanitize untrusted D-Bus introspection XML, specifically rejecting malformed structures such as <node> elements improperly nested within <method>, <signal>, <property> or <arg> elements before calling g_dbus_node_info_new_for_xml(). Alternatively, restricting the application to only process XML input from trusted, authenticated sources will completely neutralize this issue. (source: CNA: redhat)

## Affected products and versions

- GNOME / GLib (GLib): ≥ 0; < 2.89.0 (affected, semver). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 10 (glib2): ≥ 0:2.80.4-12.el10_2.14; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Support (glib2): ≥ 0:2.80.4-4.el10_0.10; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Support (glib2): ≥ 0:2.56.1-13.el7_9; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (mingw-glib2): ≥ 0:2.70.1-9.el8_10; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (glib2): ≥ 0:2.56.4-170.el8_10; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support (glib2): ≥ 0:2.56.4-10.el8_4.6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On (glib2): ≥ 0:2.56.4-10.el8_4.6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support (glib2): ≥ 0:2.56.4-158.el8_6.6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On (glib2): ≥ 0:2.56.4-158.el8_6.6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service (glib2): ≥ 0:2.56.4-165.el8_8.1; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions (glib2): ≥ 0:2.56.4-165.el8_8.1; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (glib2): ≥ 0:2.68.4-19.el9_8.2; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions (glib2): ≥ 0:2.68.4-7.el9_2.6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions (glib2): ≥ 0:2.68.4-14.el9_4.7; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Support (glib2): ≥ 0:2.68.4-16.el9_6.6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.17 (cert-manager/jetstack-cert-manager-acmesolver-rhel9): ≥ 1791371080; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.17 (cert-manager/jetstack-cert-manager-rhel9): ≥ 1791371069; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.17 (cert-manager/cert-manager-operator-rhel9): ≥ 1791788287; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.17 (cert-manager/cert-manager-istio-csr-rhel9): ≥ 1791378395; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.17 (cert-manager/cert-manager-operator-bundle): ≥ 1791970484; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.18 (cert-manager/jetstack-cert-manager-acmesolver-rhel9): ≥ 1791459707; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.18 (cert-manager/jetstack-cert-manager-rhel9): ≥ 1791459711; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.18 (cert-manager/cert-manager-istio-csr-rhel9): ≥ 1791459759; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.18 (cert-manager/cert-manager-operator-rhel9): ≥ 1789029076; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.18 (cert-manager/cert-manager-operator-bundle): ≥ 1791966259; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.20 (cert-manager/jetstack-cert-manager-rhel9): ≥ 1790223279; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.20 (cert-manager/cert-manager-istio-csr-rhel9): ≥ 1790223719; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.20 (cert-manager/cert-manager-operator-rhel9): ≥ 1790272426; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.20 (cert-manager/jetstack-cert-manager-acmesolver-rhel9): ≥ 1790589998; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.20 (cert-manager/jetstack-cert-manager-rhel9): ≥ 1790589912; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.20 (cert-manager/cert-manager-istio-csr-rhel9): ≥ 1790589914; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.20 (cert-manager/cert-manager-operator-rhel9): ≥ 1790589855; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Cert Manager support for Red Hat OpenShift release 1.20 (cert-manager/cert-manager-trust-manager-rhel9): ≥ 1790598593; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Discovery 2 (discovery/discovery-server-rhel9): ≥ 1784821670; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Discovery 2 (discovery/discovery-ui-rhel9): ≥ 1784821750; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Insights proxy 1.5 (insights-proxy/insights-proxy-container-rhel9): ≥ 1786433656; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.0 (rhai/base-image-rocm-rhel9): ≥ 1790276886; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.0 (rhai/base-image-tpu-rhel9): ≥ 1790276884; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.0 (rhai/base-image-cpu-rhel9): ≥ 1790277045; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.0 (rhai/base-image-spyre-rhel9): ≥ 1790276889; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.0 (rhai/base-image-cuda-rhel9): ≥ 1790276974; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.2 (rhai/base-image-tpu-rhel9): ≥ 1790703497; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.2 (rhai/base-image-rocm-rhel9): ≥ 1790703506; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.2 (rhai/base-image-cpu-rhel9): ≥ 1790703590; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.2 (rhai/base-image-spyre-rhel9): ≥ 1790703568; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.2 (rhai/base-image-cuda-rhel9): ≥ 1790703586; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.2 (rhai/base-image-rocm-rhel9): ≥ 1790703494; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift AI 3.4 (rhai/base-image-neuron-rhel9): ≥ 1790703542; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Update Infrastructure 5 (rhui5/cds-kubernetes-rhel9): ≥ 1784794818; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Update Infrastructure 5 (rhui5/cds-rhel9): ≥ 1784794778; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Update Infrastructure 5 (rhui5/haproxy-rhel9): ≥ 1784795112; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Update Infrastructure 5 (rhui5/installer-rhel9): ≥ 1784794289; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Update Infrastructure 5 (rhui5/rhua-rhel9): ≥ 1784795076; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Update Infrastructure 5 (rhui5/cds-kubernetes-tp-rhel9): ≥ 1787241211; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Update Infrastructure 5 (rhui5/installer-tp-rhel9): ≥ 1787135742; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Update Infrastructure 5 (rhui5/rhua-tp-rhel9): ≥ 1787241260; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 10 (mingw-glib2): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (glib2): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (mingw-glib2): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Hardened Images (glib2): Version range not reported. Source: CNA: redhat

## NVD configuration conditions

Affected CPE matches depend on the following AND/OR and negation conditions:

```json
[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:gnome:glib:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "2.89.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:redhat:cert-manager_operator:*:*:*:*:*:openshift:*:*",
            "versionEndExcluding": "1.18.2",
            "versionStartIncluding": "1.18.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:cert-manager_operator:1.17.0:*:*:*:*:openshift:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:cert-manager_operator:1.20.0:*:*:*:*:openshift:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:codeready_linux_builder:8.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:codeready_linux_builder:9.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:codeready_linux_builder:10.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:codeready_linux_builder_eus:9.6:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:codeready_linux_builder_eus:10.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:discovery:2.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:insights-proxy:1.5.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:openshift_ai:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "3.0.3",
            "versionStartIncluding": "3.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:openshift_ai:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "3.2.3",
            "versionStartIncluding": "3.2",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:openshift_ai:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "3.4.3",
            "versionStartIncluding": "3.4",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:redhat:update_infrastructure:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "5.2",
            "versionStartIncluding": "5.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_aus:8.4:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_aus:8.6:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_els:7.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:9.6:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:10.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.8:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.8:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.4:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]
```

## Severity and prioritization

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: CNA: redhat

- CVSS 3.1: 9.1 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H; source: NVD: nvd@nist.gov

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: NVD: secalert@redhat.com

- CISA KEV: No listing in collected sources

- EPSS: 0.56% as of 2026-11-04; percentile 46.71%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-191

## Exploit evidence

- exploit: https://gitlab.gnome.org/GNOME/glib/-/issues/3932 (secalert@redhat.com)

## References

- https://access.redhat.com/errata/RHSA-2026:42063 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:42089 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:42090 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:44481 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:46836 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:49512 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:51175 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:51176 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:51177 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:51181 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:51182 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:51183 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:51184 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:51185 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:53371 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:58981 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:72394 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:72395 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:72399 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:72470 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:72475 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:72476 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:72502 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:73909 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:73959 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:73960 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:73961 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:73962 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74458 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74459 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74460 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74461 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74462 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74463 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74674 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:82304 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:82322 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:82336 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:82347 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:82354 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:82372 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:82857 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:82888 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2026-58016 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2492257 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://gitlab.gnome.org/GNOME/glib/-/issues/3932 (CNA: redhat)

- https://access.redhat.com/errata/RHSA-2026:42063 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:42089 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:42090 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:44481 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:46836 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:49512 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:51175 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:51176 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:51177 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:51181 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:51182 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:51183 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:51184 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:51185 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:53371 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:58981 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:72394 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:72395 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:72399 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:72470 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:72475 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:72476 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:72502 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:73909 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:73959 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:73960 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:73961 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:73962 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:74458 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:74459 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:74460 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:74461 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:74462 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:74463 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:74674 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:82304 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:82322 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:82336 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:82347 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:82354 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:82372 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:82857 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/errata/RHSA-2026:82888 (secalert@redhat.com; Vendor Advisory)

- https://access.redhat.com/security/cve/CVE-2026-58016 (secalert@redhat.com; Vendor Advisory)

- https://bugzilla.redhat.com/show_bug.cgi?id=2492257 (secalert@redhat.com; Issue Tracking, Third Party Advisory)

- https://gitlab.gnome.org/GNOME/glib/-/issues/3932 (secalert@redhat.com; Exploit, Issue Tracking, Third Party Advisory)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-58016; retrieved 2026-11-05; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-58016; retrieved 2026-11-05; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-58016; retrieved 2026-11-05; source updated Not reported

Revision: 74db2ecb23190b674085683606d3052580fca49148c2937aace6856bea9679d9

Canonical: https://y2.dev/cve/CVE-2026-58016

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.