CVE-2026-33384
Session Fixation in QuickCMS
- State
- Published
- Severity
- 4.8 Medium
- Published
- May 29, 2026
- Updated
- May 29, 2026
- Reserved
- Mar 19, 2026
Description
QuickCMS 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.
This issue was fixed in a patch to version 6.8 published on 15.05.2026, deployments without this patch are still vulnerable.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | CERT-PL |
Weaknesses
- CWE-384 Session Fixation
Affected Products
| Product | Versions |
|---|---|
QuickCMSOpenSolution |
|
References
- https://cert.pl/posts/2026/05/CVE-2026-33384/third-party-advisory
- https://opensolution.org/home.htmlproduct
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