# CVE-2023-6710: Mod_cluster/mod_proxy_cluster: stored cross site scripting

Status: published. Published: 2023-12-12. Updated: 2026-11-06.

A flaw was found in the mod_proxy_cluster in the Apache server. This issue may allow a malicious user to add a script in the 'alias' parameter in the URL to trigger the stored cross-site scripting (XSS) vulnerability. By adding a script on the alias parameter on the URL, it adds a new virtual host and adds the script to the cluster-manager page.

## Remediation

- workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. (source: CNA: redhat)

## Affected products and versions

- Red Hat / JBoss Core Services for RHEL 8 (jbcs-httpd24-mod_proxy_cluster): ≥ 0:1.3.20-3.el8jbcs; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / JBoss Core Services on RHEL 7 (jbcs-httpd24-mod_proxy_cluster): ≥ 0:1.3.20-3.el7jbcs; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (mod_proxy_cluster): ≥ 0:1.3.20-1.el9_4; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Core Services (jbcs-httpd24-mod_proxy_cluster): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat JBoss Core Services (mod_proxy_cluster): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 5.4 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 2.24% as of 2026-11-05; percentile 82.91%

- SSVC: Not available

- Weaknesses: CWE-79

## Exploit evidence

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

## References

- https://access.redhat.com/errata/RHSA-2024:1316 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2024:1317 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2024:2387 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2023-6710 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2254128 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2024:1316 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2024:1317 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2024:2387 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/security/cve/CVE-2023-6710 (ADP: CVE; vdb-entry, x_refsource_REDHAT, x_transferred)

- https://bugzilla.redhat.com/show_bug.cgi?id=2254128 (ADP: CVE; issue-tracking, x_refsource_REDHAT, x_transferred)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2023-6710; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2023-6710; retrieved 2026-11-06; source updated Not reported

Revision: 53013db9189cfce5be182614f1004c37d83efc95e61f96e310bdc6f042836676

Canonical: https://y2.dev/cve/CVE-2023-6710

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