# CVE-2026-1961: Forman: foreman: remote code execution via command injection in websocket proxy

Status: published. Published: 2026-03-26. Updated: 2026-11-03.

A flaw was found in Foreman. A remote attacker could exploit a command injection vulnerability in Foreman's WebSocket proxy implementation. This vulnerability arises from the system's use of unsanitized hostname values from compute resource providers when constructing shell commands. By operating a malicious compute resource server, an attacker could achieve remote code execution on the Foreman server when a user accesses VM VNC console functionality. This could lead to the compromise of sensitive credentials and the entire managed infrastructure.

## Remediation

- workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. (source: CNA: redhat)
- fix: RHSA-2026:5971: Red Hat Satellite 6.16 for RHEL 8, Red Hat Satellite 6.16 for RHEL 9

RHSA-2026:5970: Red Hat Satellite 6.17 for RHEL 9

RHSA-2026:5968: Red Hat Satellite 6.18 for RHEL 9 (source: ADP: redhat-SADP)
- workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. (source: ADP: redhat-SADP)

## Affected products and versions

- Red Hat / Red Hat Satellite 6.16 for RHEL 8 (foreman): ≥ 0:3.12.0.14-1.el8sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.16 for RHEL 9 (foreman): ≥ 0:3.12.0.14-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (foreman): ≥ 0:3.14.0.14-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (libcomps): ≥ 0:0.1.23-0.3.el9pc; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (python-brotli): ≥ 0:1.2.0-0.1.el9pc; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (python-django): ≥ 0:4.2.28-0.1.el9pc; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (python-pulp-container): ≥ 0:2.22.3-1.el9pc; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (python-pulp-rpm): ≥ 0:3.27.10-2.el9pc; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (rubygem-fog-kubevirt): ≥ 0:1.5.1-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (rubygem-foreman_kubevirt): ≥ 0:0.4.3-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (rubygem-katello): ≥ 0:4.16.0.14-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (rubygem-rubyipmi): ≥ 0:0.13.0-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (satellite): ≥ 0:6.17.7-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (yggdrasil-worker-forwarder): ≥ 0:0.0.3-4.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.18 for RHEL 9 (foreman): ≥ 0:3.16.0.12-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6 (satellite-utils:el8/foreman): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.16 for RHEL 8 (foreman): ≥ 0:3.12.0.14-1.el8sat; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.16 for RHEL 9 (foreman): ≥ 0:3.12.0.14-1.el9sat; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (foreman): ≥ 0:3.14.0.14-1.el9sat; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (libcomps): ≥ 0:0.1.23-0.3.el9pc; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (python-brotli): ≥ 0:1.2.0-0.1.el9pc; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (python-django): ≥ 0:4.2.28-0.1.el9pc; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (python-pulp-container): ≥ 0:2.22.3-1.el9pc; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (python-pulp-rpm): ≥ 0:3.27.10-2.el9pc; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (rubygem-fog-kubevirt): ≥ 0:1.5.1-1.el9sat; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (rubygem-foreman_kubevirt): ≥ 0:0.4.3-1.el9sat; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (rubygem-katello): ≥ 0:4.16.0.14-1.el9sat; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (rubygem-rubyipmi): ≥ 0:0.13.0-1.el9sat; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (satellite): ≥ 0:6.17.7-1.el9sat; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (yggdrasil-worker-forwarder): ≥ 0:0.0.3-4.el9sat; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6.18 for RHEL 9 (foreman): ≥ 0:3.16.0.12-1.el9sat; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Satellite 6 (satellite-utils:el8/foreman): Version range not reported. Source: ADP: redhat-SADP

## Severity and prioritization

- CVSS 3.1: 8 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H; source: CNA: redhat

- CVSS 3.1: 8 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H; source: ADP: redhat-SADP

- CISA KEV: No listing in collected sources

- EPSS: 1.92% as of 2026-11-02; percentile 79.92%

- SSVC: exploitation poc; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-78

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2026:5968 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:5970 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:5971 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2026-1961 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2437036 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- http://www.openwall.com/lists/oss-security/2026/03/27/3 (ADP: CVE)

- https://access.redhat.com/security/cve/CVE-2026-1961 (ADP: redhat-SADP; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2437036 (ADP: redhat-SADP; issue-tracking, x_refsource_REDHAT)

- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1961.json (ADP: redhat-SADP; x_sadp-csaf-vex)

- https://access.redhat.com/errata/RHSA-2026:5971 (ADP: redhat-SADP; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:5970 (ADP: redhat-SADP; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:5968 (ADP: redhat-SADP; vendor-advisory, x_refsource_REDHAT)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-1961; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-1961; retrieved 2026-11-03; source updated Not reported

Revision: 5fbcc42d7e156e8db76ddcba30f6501d4a92e5158cbf79ab3440f72189b88914

Canonical: https://y2.dev/cve/CVE-2026-1961

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