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Fencer Vulns
medium 5.4

CVE-2023-6710 json

Mod_cluster/mod_proxy_cluster: stored cross site scripting

published 2023-12-12 2 y ago modified 2026-11-06 2 d ago also EUVD-2023-58930

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
1
Exploit-DB

Summary

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.

Patch / fix

  • Red Hat JBoss Core Services for RHEL 8 0:1.3.20-3.el8jbcs
  • Red Hat JBoss Core Services on RHEL 7 0:1.3.20-3.el7jbcs
  • Red Hat Red Hat Enterprise Linux 9 0:1.3.20-1.el9_4
  • mod_jk RHEL 9 1.2.49-1.el9_4
  • mod_proxy_cluster RHEL 9 1.3.20-1.el9_4
  • jbcs-httpd24-curl jboss core services 1 8.6.0-3.el7jbcs
  • jbcs-httpd24-curl jboss core services 1 8.6.0-3.el8jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.57-9.el7jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.57-9.el8jbcs
  • jbcs-httpd24-libcurl jboss core services 1 8.6.0-3.el7jbcs
  • jbcs-httpd24-libcurl jboss core services 1 8.6.0-3.el8jbcs

red hat advisories RHSA-2024:2387RHSA-2024:1316

  • mod_jk AlmaLinux 9 1.2.49-1.el9_4
  • mod_proxy_cluster AlmaLinux 9 1.3.20-1.el9_4

almalinux advisories ALSA-2024:2387

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-6710 updated cvss 5.4

mod_cluster/mod_proxy_cluster: Stored Cross site Scripting

  • Red Hat JBoss Core Services mod_proxy_cluster mod_proxy_cluster
    affected: workaround, no fix available
  • Red Hat Enterprise Linux AppStream (v. 9) mod_proxy_cluster 1.3.20-1.el9_4
    fixed: vendor fix RHSA-2024:2387
  • Red Hat JBoss Core Services
    fixed: vendor fix RHSA-2024:1317
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-mod_proxy_cluster 1.3.20-3.el7jbcs Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-mod_proxy_cluster 1.3.20-3.el8jbcs
    fixed: vendor fix RHSA-2024:1316
  • Red Hat Enterprise Linux AppStream (v. 9) mod_jk 1.2.49-1.el9_4 Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl 8.6.0-3.el7jbcs, jbcs-httpd24-httpd 2.4.57-9.el7jbcs, jbcs-httpd24-libcurl 8.6.0-3.el7jbcs, jbcs-httpd24-mod_md 2.4.24-4.el7jbcs, jbcs-httpd24-mod_ssl 2.4.57-9.el7jbcs, jbcs-httpd24-mod_ldap 2.4.57-9.el7jbcs, +22 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl 8.6.0-3.el8jbcs, jbcs-httpd24-httpd 2.4.57-9.el8jbcs, jbcs-httpd24-libcurl 8.6.0-3.el8jbcs, jbcs-httpd24-mod_md 2.4.24-4.el8jbcs, jbcs-httpd24-mod_ssl 2.4.57-9.el8jbcs, jbcs-httpd24-mod_ldap 2.4.57-9.el8jbcs, +22 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Published
  2. First public exploit (EDB-52010)

Exploit prediction

2.24% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-52010 Apache mod_proxy_cluster 1.2.6 - Stored XSS webapps, 2024-05-13

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

  • Red Hat JBoss Core Services for RHEL 8
  • Red Hat JBoss Core Services on RHEL 7
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat JBoss Core Services

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.