CVE-2025-2979: A vulnerability classified as problematic has been found in WCMS 11

Routine

LOW 2.4DOWNGRADE

CVE-2025-2979 is a low-severity flaw (CVSS 2.4) affecting wcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability classified as problematic has been found in WCMS 11. This affects an unknown part of the file /index.php?anonymous/setregister of the component Registration. The manipulation of the argument Username leads to cross site scripting. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	2.4 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-79, CWE-94
Published	2025-03-31
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: wcms

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-03-31 06:15 UTCPublished CVE record published
2026-06-17 09:07 UTCUpdated Record last modified

wcms wcms DOWNGRADE

Affected: 11.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.0

1. Check installed version

apt-cache policy wcms || rpm -q wcms || wcms --version

2. No fixed release: DOWNGRADE to a release before 11.0 (Debian / Ubuntu)

apt-cache madison wcms sudo apt install wcms=<VERSION_BEFORE_11.0> sudo apt-mark hold wcms

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list wcms sudo dnf downgrade wcms-<VERSION_BEFORE_11.0> sudo dnf versionlock add wcms

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-2979?

wcms: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-2979 being exploited?

CVE-2025-2979 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-2979 affect?

CVE-2025-2979 affects wcms. Severity is low (CVSS 2.4). A vulnerability classified as problematic has been found in WCMS 11. This affects an unknown part of the file /index.php?anonymous/setregister of the component Registration. The manipulation of the argument Username leads to cross site scri

How urgent is CVE-2025-2979?

Priority 22/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-5149 MEDIUM 5.6 UPGRADE A vulnerability was found in WCMS up to 8.3.11
CVE-2025-3800 HIGH 7.3 DOWNGRADE A vulnerability has been found in WCMS 11 and classified as critical
CVE-2025-3799 HIGH 7.3 DOWNGRADE A vulnerability, which was classified as critical, was found in WCMS 11
CVE-2025-3798 MEDIUM 4.7 DOWNGRADE A vulnerability, which was classified as critical, has been found in WCMS 11
CVE-2025-2978 MEDIUM 6.3 DOWNGRADE A vulnerability was found in WCMS 11

References

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