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Medium, CVSS 5.3

TYPO3 CMS Allows Broken Access Control in Edit Document Controller

CVE-2025-59020GHSA-5j7q-wmh7-cqhg

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (typo3/cms-backend 14.0.2, 13.4.23, 12.4.41, 11.5.49, 10.4.55), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • Packagist typo3/cms-backend

    Affected
    >= 14.0.0, <= 14.0.1>= 13.0.0, <= 13.4.22>= 12.0.0, <= 12.4.40>= 11.0.0, <= 11.5.48>= 10.0.0, <= 10.4.54
    Fixed in
    11.5.49, 10.4.55, 13.4.23, 14.0.2, 12.4.41

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L · score source
EPSS
  • CVE-2025-59020: 0.31% estimated exploitation activity in the next 30 days; percentile 24.20 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Problem By exploiting the defVals parameter, attackers could bypass field‑level access checks during record creation in the TYPO3 backend. This gave them the ability to insert arbitrary data into prohibited exclude fields of a database table for which the user already has write permission for a reduced set of fields. Solution Update to TYPO3 versions 10.4.55 ELTS, 11.5.49 ELTS, 12.4.41 LTS, 13.4.23 LTS, 14.0.2 that fix the problem described. Credits Thanks to Daniel Windloff for reporting this issue, and to TYPO3 core & security team member Benjamin Franzke for fixing it. References TYPO3-CORE-SA-2026-001

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-5j7q-wmh7-cqhg

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2025-59020

Advisory: TYPO3 CMS Allows Broken Access Control in Edit Document Controller
IDs: CVE-2025-59020, GHSA-5j7q-wmh7-cqhg
Record: https://patchnext.com/advisories/cve-2025-59020 (revision 1, source checked 26 Oct 2026, 14:35 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: typo3/cms-backend 14.0.2, 13.4.23, 12.4.41, 11.5.49, 10.4.55. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist typo3/cms-backend: affected >= 14.0.0, <= 14.0.1; >= 13.0.0, <= 13.4.22; >= 12.0.0, <= 12.4.40; >= 11.0.0, <= 11.5.48; >= 10.0.0, <= 10.4.54; fixed in 11.5.49, 10.4.55, 13.4.23, 14.0.2, 12.4.41

## Suggested inspection (read-only)
- Packagist typo3/cms-backend: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on typo3/cms-backend.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-5j7q-wmh7-cqhg (GitHub-reviewed advisory GHSA-5j7q-wmh7-cqhg lists affected ranges: Packagist typo3/cms-backend >=14.0.0 =13.0.0 =12.0.0 =11.0.0 =10.0.0 <=10.4.54)

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