CVE-2026-24351 Stored XSS in PluXml CMS

Medium 5.1 Published 27 Feb 2026 Updated 27 Feb 2026

Attackers with editing privileges can inject malicious scripts into static pages, leading to code execution or account takeover for visitors.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-24351?

CVE-2026-24351 is a medium-severity cross-site scripting vulnerability in PluXml CMS, published on 27 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

PluXml CMS is vulnerable to Stored XSS in Static Pages editing functionality. Attacker with editing privileges can inject arbitrary HTML and JS into website, which will be rendered/executed when visiting edited page.

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-79

Which versions are affected by CVE-2026-24351?

It affects 1 product.

Products include Pluxml Pluxml.

How do I fix CVE-2026-24351?

No fix has been published for CVE-2026-24351 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-24351 being exploited?

There is no known exploitation of CVE-2026-24351 in the wild and no public exploit code.

Sources

Also known as GHSA-jwfw-xx6c-8gwv, UBUNTU-CVE-2026-24351.