CVE-2026-24352

Critical

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.

SeverityCritical
CVSS9.8
Exploit probability—
ProductPluxml
PublishedFeb 27, 2026
First seenFeb 27, 2026
Weakness typeCWE-384CWE-384

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
pluxml pluxml5.8.21, 5.9.0—

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