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MEDIUM severity

Authentication Bypass in TYPO3 CMSGHSA-6xh8-8pfv-53vx

MEDIUM

GHSA-6xh8-8pfv-53vx is a medium-severity (CVSS 5.4) vulnerability in typo3/cms. A fix is available for typo3/cms — see the affected versions and patch details below.

Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Dec 2, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

3 pkgs affected
🐘typo3/cms🐘typo3/cms🐘typo3/cms

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

The default authentication service misses to invalidate empty strings as password. Therefore it is possible to authenticate backend and frontend users without password set in the database. Note: TYPO3 does not allow to create user accounts without a password. Your TYPO3 installation might only be affected if there is a third party component creating user accounts without password by directly manipulating the database.

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagisttypo3/cms≥ 6.2.0&&< 6.2.206.2.20composer require typo3/cms:^6.2.20
🐘Packagisttypo3/cms≥ 7.6.0&&< 7.6.57.6.5composer require typo3/cms:^7.6.5
🐘Packagisttypo3/cms≥ 8.0.0&&< 8.0.18.0.1composer require typo3/cms:^8.0.1

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for typo3/cms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update typo3/cms to 6.2.20 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6xh8-8pfv-53vx is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

The default authentication service misses to invalidate empty strings as password. Therefore it is possible to authenticate backend and frontend users without password set in the database. Note: TYPO3 does not allow to create user accounts without a password. Your TYPO3 installation might only be affected if there is a third party component creating user accounts without password by directly manipulating the database.
O3 Security · Impact-Aware SCA

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Authentication Bypass in TYPO3 CMS (Medium 5.4)