Vulnerability · Published Feb 27, 2026 · Assigned by CERT-PL

CVE-2026-24351Stored XSS in PluXml CMS

Medium 5.1

In plain English

A medium-severity cross-site scripting in PluXml CMS from PluXml. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.2%top 90.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Ubuntu:22.04:LTS	pluxml	no fix listed	UBUNTU-CVE-2026-24351

Affected products (as reported)

Vendor	Product	Versions
PluXml	PluXml CMS	5.9.0-rc75.8.21

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

References

https://cert.pl/posts/2026/03/CVE-2026-24350 third-party-advisory
https://pluxml.org/ product