CVE-2025-59017
CVE-2025-59017 is a CWE-862 vulnerability in typo3/cms-workspaces. O3 Security confirms whether CVE-2025-59017 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Broken Access Control in Backend AJAX Routes
Blast Radius
typo3/cms-workspaces🐘typo3/cms-workspaces🐘typo3/cms-workspaces🐘typo3/cms-workspaces🐘typo3/cms-workspaces🐘typo3/cms-recycler🐘typo3/cms-recycler🐘typo3/cms-recycler+16 moreReal-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
Missing authorization checks in the Backend Routing of TYPO3 CMS versions 9.0.0‑9.5.54, 10.0.0‑10.4.53, 11.0.0‑11.5.47, 12.0.0‑12.4.36, and 13.0.0‑13.4.17 allow backend users to directly invoke AJAX backend routes without having access to the corresponding backend modules.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | typo3/cms-workspaces | ≥ 9.0.0&&< 12.4.37 | 12.4.37 |
| 🐘Packagist | typo3/cms-workspaces | ≥ 10.0.0&&< 12.4.37 | 12.4.37 |
| 🐘Packagist | typo3/cms-workspaces | ≥ 11.0.0&&< 12.4.37 | 12.4.37 |
| 🐘Packagist | typo3/cms-workspaces | ≥ 12.0.0&&< 12.4.37 | 12.4.37 |
| 🐘Packagist | typo3/cms-workspaces | ≥ 13.0.0&&< 13.4.18 | 13.4.18 |
| 🐘Packagist | typo3/cms-recycler | ≥ 9.0.0&&< 12.4.37 | 12.4.37 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for typo3/cms-workspaces. 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-workspaces to 12.4.37 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-59017 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 CVE-2025-59017 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-2025-59017. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2025-59017 in your dependencies?
O3 detects CVE-2025-59017 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.