CVE-2026-33384 | THREATINT

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.

PUBLISHED Reserved 2026-03-19 | Published 2026-05-29 | Updated 2026-05-29 | Assigner CERT-PL

MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-384 Session Fixation

Product status

Default status

unaffected

Any version

affected

Credits

Jakub Lipiński finder

References

cert.pl/posts/2026/05/CVE-2026-33384/ third-party-advisory

opensolution.org/home.html product

cve.org (CVE-2026-33384)

nvd.nist.gov (CVE-2026-33384)

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