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Advisory record · GHSA-hwvq-2w67-rvxp

TYPO3 CMS has Broken Access Control in its Form Framework

CVSS 7.6 HighEPSS 0.0025 · 16th percentile

Published by the GitHub Advisory Database at 12 Jun 2026, 19:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
typo3/cms-corePackagist<10.4.57 || >=11.0.0, <11.5.51 || >=12.0.0, <12.4.46 || >=13.0.0, <13.4.31 || >=14.0.0, <14.3.310.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3
typo3/cms-formPackagist<10.4.57 || >=11.0.0, <11.5.51 || >=12.0.0, <12.4.46 || >=13.0.0, <13.4.31 || >=14.0.0, <14.3.310.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3
Identifiers
GHSA-hwvq-2w67-rvxp · CVE-2026-47346 · PKSA-6jfs-jhtj-72x7 · PKSA-m239-hcqk-kg59
Weakness (CWE)
CWE-178 · CWE-862
Tags
Published
12 Jun 2026
Updated
10 Sept 2026

Machine-written summary

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

TYPO3 CMS packages typo3/cms-core and typo3/cms-form, in versions below 10.4.57, from 11.0.0 to below 11.5.51, from 12.0.0 to below 12.4.46, from 13.0.0 to below 13.4.31, and from 14.0.0 to below 14.3.3, contain a broken access control flaw in the Form Framework. A backend user with file write permissions can upload form definition files with mixed-case extensions to bypass the upload restriction, and a crafted file can then run arbitrary SQL to create administrative backend accounts. Upgrade to 10.4.57, 11.5.51, 12.4.46, 13.4.31, or 14.3.3 or later, depending on the installed release line.

Written 31 Oct 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

ScoreRatingCVSSVectorSource
7.6 High 4.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CNA (TYPO3)
  • CISA KEV Not listed.
  • EPSS 0.0025, the 16th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:00 UTC First seen by agentprime
  2. 31 Oct 2026, 14:00 UTC Confirmed by OSV

Sources

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.