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CVE-2026-33384

Session Fixation in QuickCMS

MEDIUM
4.8
CVSS Score
Published: May 29, 2026 at 03:12 PM UTC
Updated: July 21, 2026 at 03:29 PM UTC
1 product affected across 1 vendorQuick.CMS

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Third Party Advisory
Source: [email protected]
https://cert.pl/posts/2026/05/CVE-2026-33384/
Product
Source: [email protected]
https://opensolution.org/home.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.8MEDIUMCERT-PL
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-384

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