PluXml CMS 5.8.21/5.9.0-rc7 SVG File Parser cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, was found in PluXml CMS 5.8.21/5.9.0-rc7. The impacted element is an unknown function of the component SVG File Parser. The manipulation results in cross site scripting. This vulnerability was named CVE-2026-24350. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, was found in PluXml CMS 5.8.21/5.9.0-rc7. Affected is some unknown functionality of the component SVG File Parser. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

PluXml CMS is vulnerable to Stored XSS in file uploading functionality. An authenticated attacker can upload an SVG file containing a malicious payload, which will be executed when a victim clicks the link associated with the uploaded image. In version 5.9.0-rc7 clicking the link associated with the uploaded image doesn't execute malicious code but directly accessing the file will still execute the embedded payload. 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.

The weakness was presented by Arkadiusz Marta. This vulnerability is traded as CVE-2026-24350 since 01/22/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability scanner Nessus provides a plugin with the ID 301039 (Linux Distros Unpatched Vulnerability : CVE-2026-24350), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (301039). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Content Management System

Vendor

• PluXml

Name

• CMS

Version

• 5.8.21
• 5.9.0-rc7

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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