# Denial of Service in TYPO3 Bookmark Toolbar

Advisory record · `GHSA-ffcv-v6pw-qhrp`

- **Identifiers:** `GHSA-ffcv-v6pw-qhrp` · `CVE-2024-34537` · `PKSA-9vjc-5m3y-9mrq`
- **State:** Confirmed
- **Severity:** CVSS 2.7 Low
- **Critical:** No
- **Weakness (CWE):** [CWE-248](https://cwe.mitre.org/data/definitions/248.html) · [CWE-1286](https://cwe.mitre.org/data/definitions/1286.html)
- **Tags:** [CWE-248](https://agentprime.io/advisories/tag/cwe-248.md) · [CWE-1286](https://agentprime.io/advisories/tag/cwe-1286.md)
- **Published:** 8 Oct 2024
- **Updated:** 31 Oct 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 8 Oct 2024, 22:18 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `typo3/cms-backend` (Packagist): affected `>=13.0.0, <13.3.1 || >=12.0.0, <12.4.21 || >=11.0.0, <11.5.40 || >=10.0.0, <10.4.46`; fixed in `13.3.1`, `12.4.21`, `11.5.40`, `10.4.46`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> TYPO3 CMS (typo3/cms-backend) versions from 10.0.0 to before 10.4.46, 11.0.0 to before 11.5.40, 12.0.0 to before 12.4.21, and 13.0.0 to before 13.3.1 are affected. An attacker needs an administrator-level backend user account, and manipulated data saved in the bookmark toolbar can then block further access to the backend interface with a general error state. Upgrade to 10.4.46, 11.5.40, 12.4.21, or 13.3.1, depending on the branch in use.

Written 4 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 2.7 Low, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L/E:F/RL:O/RC:C`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.0071, the 53rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:29 UTC: First seen by agentprime
- 31 Oct 2026, 14:29 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-ffcv-v6pw-qhrp)

## Sources

- [GitHub Advisory Database: GHSA-ffcv-v6pw-qhrp](https://github.com/advisories/GHSA-ffcv-v6pw-qhrp)
- [OSV: GHSA-ffcv-v6pw-qhrp](https://osv.dev/vulnerability/GHSA-ffcv-v6pw-qhrp)
- <https://github.com/TYPO3/typo3/security/advisories/GHSA-ffcv-v6pw-qhrp>
- <https://nvd.nist.gov/vuln/detail/CVE-2024-34537>
- <https://github.com/TYPO3-CMS/backend>
- <https://typo3.org/security/advisory/typo3-core-sa-2024-011>
- <https://www.mgm-sp.com/cve/denial-of-service-in-typo3-bookmark-toolbar>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-ffcv-v6pw-qhrp>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-ffcv-v6pw-qhrp/>. Everything for agents: <https://agentprime.io/llms.txt>.