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CVE-2025-54297HighCVSS 7.0CVE published 23 July 2025Added to mySites.guru 23 July 2025

CComment (com_comment) 5.0.0 to 6.1.14 - Authenticated Stored XSS

CComment by Compojoom, versions 5.0.0 through 6.1.14, contains a stored cross-site scripting vulnerability. A comment payload is persisted by the component and executed when other users, including administrators moderating comments, view the affected content. Update to 6.1.15 or later.

Is my site affected?

Affected
CComment from 5.0.0 up to and including 6.1.14
Fixed in
Update to 6.1.15 or later
What to do
Update CComment to 6.1.15 or later.
Check whether your sites are affected

How CVE-2025-54297 is scored

The base metrics as Joomla CNA published them, and what each one means for a site running an affected version. Threat and environmental metrics are left out: they describe a moment or a particular install rather than the flaw.

7.0 High

CVSS 4.0, scored by Joomla CNA
CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

How it is reached

AV:N Attack vector
Network. Reachable across the internet
AC:H Attack complexity
High. The attacker has to defeat a mitigation first
AT:N Attack requirements
None. Works against any affected install
PR:H Privileges required
High. Needs an account with elevated rights
UI:A User interaction
Active. Someone has to be talked through a few steps

What it does to the site

VC:H Confidentiality
High. Everything the site holds can be read
VI:H Integrity
High. Data and files can be altered at will
VA:N Availability
None. The site stays up

What it does beyond the site

SC:N Confidentiality
None. Other systems keep their data
SI:N Integrity
None. Other systems keep their integrity
SA:N Availability
None. Other systems stay up

mySites.guru rates this Medium. Where our assessment and the published record differ, your sites are checked against ours.

Timeline

  1. 23 July 2025CVE-2025-54297 record published by its CNA
  2. 23 July 2025mySites.guru check added for CComment (from 5.0.0 up to and including 6.1.14)

Rule details

Other vulnerabilities in CComment

Updating for CVE-2025-54297 alone can leave a site on a release another rule still matches. These are the other flaws we check for in the same extension.

CComment

Latest safe version: 6.1.15

References

CVE-2025-54297 questions

Which versions are affected by CVE-2025-54297?
CVE-2025-54297 affects CComment from 5.0.0 up to and including 6.1.14.
How do I fix CVE-2025-54297?
Update CComment to 6.1.15 or later. Then confirm the installed version on the Joomla administrator's Extensions: Manage screen.
How severe is CVE-2025-54297?
Joomla CNA scores it 7.0 (High) under CVSS 4.0. In plain terms: reachable across the internet, needs an account with elevated rights and someone has to be talked through a few steps.

Running an affected version on a site you manage?

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This check is part of the mySites.guru Joomla vulnerability scanner, which reads every installed extension's version on each audit. Browse the rest of the Joomla vulnerability database.

Rules current as of 5 October 2026.