GHSA-3p42-w5ch-gg42
GHSA-3p42-w5ch-gg42 is a Open Redirect vulnerability in typo3/cms-core. O3 Security confirms whether GHSA-3p42-w5ch-gg42 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
TYPO3 CMS has an Open Redirect Vulnerability via Core Utilities
Blast Radius
typo3/cms-core🐘typo3/cms-core🐘typo3/cms-core🐘typo3/cms-core🐘typo3/cms-coreReal-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
Problem
Applications that use GeneralUtility::sanitizeLocalUrl to allow only local URLs are vulnerable to open redirect attacks if the URL is used after it has passed the aforementioned sanitization checks. This enables attackers to redirect users to external content and carry out phishing attacks.
Solution
Update to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described.
Credits
TYPO3 CMS thanks Alexandre Romao for reporting this issue, and TYPO3 core & security team member Benjamin Franzke for fixing it.
Resources
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | typo3/cms-core | all versions | 10.4.57 |
| 🐘Packagist | typo3/cms-core | ≥ 11.0.0&&< 11.5.51 | 11.5.51 |
| 🐘Packagist | typo3/cms-core | ≥ 12.0.0&&< 12.4.46 | 12.4.46 |
| 🐘Packagist | typo3/cms-core | ≥ 13.0.0&&< 13.4.31 | 13.4.31 |
| 🐘Packagist | typo3/cms-core | ≥ 14.0.0&&< 14.3.3 | 14.3.3 |
Detection & mitigation playbook
Open-source dependencyDetect
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.
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 GHSA-3p42-w5ch-gg42 is resolved across your whole dependency graph.
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.
How O3 protects you
O3 pinpoints whether GHSA-3p42-w5ch-gg42 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 GHSA-3p42-w5ch-gg42. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-3p42-w5ch-gg42 in your dependencies?
O3 detects GHSA-3p42-w5ch-gg42 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.