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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PluXml | PluXml CMS | 5.9.0-rc7, 5.8.21 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | pluxml | No fix yet | — |
| Ubuntu 20.04 LTS | pluxml | No fix yet | — |
| Ubuntu 18.04 LTS | pluxml | No fix yet | — |
| Ubuntu 16.04 LTS | pluxml | No fix yet | — |
References
- https://pluxml.org/ product
- https://cert.pl/posts/2026/03/CVE-2026-24350 third-party-advisory