CVE-2026-33384
Medium
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.
SeverityMedium
CVSS4.8
Exploit probability—
ProductQuickCMS
PublishedMay 29, 2026
First seenMay 29, 2026
Weakness typeCWE-384CWE-384
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| OpenSolution QuickCMS | v ≤ 6.8 | — |
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