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4.8
PluXml CMS lets attackers hijack user sessions
CVE-2026-24352
Summary
An attacker can take over a user's session on a PluXml CMS website, even after the user logs in. This is because the session ID is set before login and remains the same. Users of versions 5.8.21 and 5.9.0-rc7 are affected, and other versions may also be vulnerable. Update to a later version to fix this issue.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| pluxml | pluxml | 5.8.9 | – |
| pluxml | pluxml | 5.8.21 | – |
Original title
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 ...
Original 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.
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.
nvd CVSS3.1
9.8
nvd CVSS4.0
4.8
Vulnerability type
CWE-384
- https://cert.pl/posts/2026/03/CVE-2026-24350 Broken Link
- https://pluxml.org/ Product
Published: 27 Feb 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026