CVE-2026-128335

Contao before 5.3.54, 5.7.17, and 6.0.6 Session Invalidation Failure on 2FA Change

Published Nov 13, 2026 CVSS 4.0 · 2.1 Low EPSS < 1% KEV · Not listed
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.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
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.
Title Contao before 5.3.54, 5.7.17, and 6.0.6 Session Invalidation Failure on 2FA Change
First Time appeared Contao
Contao contao
Weaknesses CWE-613
CPEs cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*
Vendors & Products Contao
Contao contao
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 2.1, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses
  • CWE-613

    Insufficient Session Expiration

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 13, 2026, 9:33 AM
Reserved
Nov 13, 2026, 1:20 AM
Status
Deferred
Published
Nov 13, 2026, 10:18 AM
Modified
Nov 13, 2026, 10:18 AM