CVE-2026-33384CWE-384

Session Fixation in QuickCMS

Medium · published May 29, 2026

CVSS v4.0
4.8
EPSS
0%
Percentile
10.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
Vector
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
EPSS
0.00211 · 10.8th percentile
Weakness
CWE-384 · Session Fixation
Published
2026-05-29T15:12Z
EPSS history
Timeline
  • 29 MAY 15:12Z
    Session Fixation in QuickCMS
    cvelistv5