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CVE-2026-47351

CVE-2026-47351 is a Information Exposure vulnerability in typo3/cms-core. O3 Security confirms whether CVE-2026-47351 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

TYPO3 CMS - Broken Access Control in Clipboard

Also known asGHSA-q93m-25xv-94hh
Published
Jun 9, 2026
Updated
Jul 25, 2026
Affected
10 pkgs
Patched
10 / 10
Exploits
None indexed

Blast Radius

10 pkgs affected
🐘typo3/cms-core🐘typo3/cms-core🐘typo3/cms-core🐘typo3/cms-core🐘typo3/cms-core🐘typo3/cms-backend🐘typo3/cms-backend🐘typo3/cms-backend+2 more

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Backend users were able to insert arbitrary records and files into the TYPO3 clipboard without proper read permission checks, which allowed users to gather information about records and files they were not authorized to view. This issue affects TYPO3 CMS versions 10.4.0-13.4.30 and 14.0.0-14.3.2.

Affected Packages

10 total 10 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagisttypo3/cms-coreall versions10.4.57
🐘Packagisttypo3/cms-core11.0.0&&< 11.5.5111.5.51
🐘Packagisttypo3/cms-core12.0.0&&< 12.4.4612.4.46
🐘Packagisttypo3/cms-core13.0.0&&< 13.4.3113.4.31
🐘Packagisttypo3/cms-core14.0.0&&< 14.3.314.3.3
🐘Packagisttypo3/cms-backendall versions10.4.57

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for typo3/cms-core. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update typo3/cms-core to 10.4.57 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-47351 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether CVE-2026-47351 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to CVE-2026-47351. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Backend users were able to insert arbitrary records and files into the TYPO3 clipboard without proper read permission checks, which allowed users to gather information about records and files they were not authorized to view. This issue affects TYPO3 CMS versions 10.4.0-13.4.30 and 14.0.0-14.3.2.
O3 Security · Impact-Aware SCA

Is CVE-2026-47351 in your dependencies?

O3 detects CVE-2026-47351 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.