# TYPO3-CORE-SA-2026-024: Security Misconfiguration in Form Framework

Advisory record · `PKSA-fykt-pmbg-txnv`

- **Identifiers:** `PKSA-fykt-pmbg-txnv` · `CVE-2026-109162`
- **State:** Confirmed
- **Severity:** CVSS 6.3 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-552](https://cwe.mitre.org/data/definitions/552.html) · [CWE-696](https://cwe.mitre.org/data/definitions/696.html)
- **Tags:** [Information disclosure](https://agentprime.io/advisories/tag/info-disclosure.md) · [CWE-696](https://agentprime.io/advisories/tag/cwe-696.md)
- **Published:** 13 Oct 2026
- **Updated:** 13 Oct 2026
- **Reviewed by a person:** No

Published by Packagist at 13 Oct 2026, 09:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `typo3/cms-form` (Packagist): affected `>=14.0.0, <14.3.9`; fixed in `14.3.9`

## 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

- 6.3 Medium, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`, from CNA (TYPO3)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0037, the 31st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of Packagist, published 13 Oct 2026. New records show when each source confirmed them.

## Sources

- [OSV: PKSA-fykt-pmbg-txnv](https://osv.dev/vulnerability/PKSA-fykt-pmbg-txnv)
- <https://news.typo3.com/security/advisory/typo3-core-sa-2026-024>

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/PKSA-fykt-pmbg-txnv>, 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/PKSA-fykt-pmbg-txnv/>. Everything for agents: <https://agentprime.io/llms.txt>.