CVE-2026-34372
CVE-2026-34372 is a CWE-288 vulnerability in sulu/sulu. O3 Security confirms whether CVE-2026-34372 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Sulu checks fix permissions for subentities endpoints
Blast Radius
sulu/sulu🐘sulu/suluReal-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
Sulu is an open-source PHP content management system based on the Symfony framework. From versions 1.0.0 to before 2.6.22, and 3.0.0 to before 3.0.5, a user which has permission for the Sulu Admin via at least one role could have access to the sub-entities of contacts via the admin API without even have permission for contacts. This issue has been patched in versions 2.6.22 and 3.0.5.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | sulu/sulu | ≥ 1.0.0&&< 2.6.22 | 2.6.22 |
| 🐘Packagist | sulu/sulu | ≥ 3.0.0&&< 3.0.5 | 3.0.5 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for sulu/sulu. 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 sulu/sulu to 2.6.22 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-34372 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-2026-34372 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-2026-34372. 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-2026-34372 in your dependencies?
O3 detects CVE-2026-34372 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.