CVE-2026-24352 Session Fixation in PluXml CMS

Medium 4.8 Published 27 Feb 2026 Updated 27 Feb 2026

Attackers can hijack authenticated sessions by fixing session IDs before login, leading to account takeover in PluXml CMS.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-24352?

CVE-2026-24352 is a medium-severity authentication bypass vulnerability in PluXml CMS, published on 27 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

PluXml CMS allows a user's session identifier to be set before authentication. The value of this session ID stays the same after authentication. This behaviour enables an attacker to fix a session ID for a victim and later hijack the authenticated session.

The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only versions 5.8.21 and 5.9.0-rc7 were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

Weakness: CWE-384

Which versions are affected by CVE-2026-24352?

It affects 1 product.

Products include Pluxml Pluxml.

How do I fix CVE-2026-24352?

No fix has been published for CVE-2026-24352 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-24352 being exploited?

There is no known exploitation of CVE-2026-24352 in the wild and no public exploit code.

Sources

Also known as GHSA-pq7v-9vmm-7jw6, UBUNTU-CVE-2026-24352.