CVE-2026-128335

LowCVSS 3.7/10Last modified Nov 13, 2026

Description

Contao 4.6.0 before 5.3.54, 5.4.0-RC1 before 5.7.17, and 6.0.0-RC1 before 6.0.6 fails to invalidate existing user sessions when two-factor authentication is enabled or disabled. Because Contao\User::isEqualTo() and serialized session data omit two-factor state, attackers already holding a session keep it after the owner changes 2FA settings.

Metrics

CVSS 3.1 3.7/10CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-613

Affected software

No affected versions have been published.

Timeline

Published
Nov 13, 2026
Last modified
Nov 13, 2026
NVD status
Deferred

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CVE-2026-128335: Low severity, CVSS 3.7 | Vulnix