CVE-2025-43813
HIGHCVE-2025-43813 is a high-severity (CVSS 8.2) Path Traversal vulnerability in com.liferay.portal:release.portal.bom. O3 Security confirms whether CVE-2025-43813 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Liferay Portal vulnerable to path traversal and denial-of-service in the ComboServlet
Real-World Exposure
com.liferay.portal:release.portal.bom☕com.liferay.portal:com.liferay.portal.implReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Possible path traversal vulnerability and denial-of-service in the ComboServlet in Liferay Portal 7.4.0 through 7.4.3.107, and older unsupported versions, and Liferay DXP 2023.Q4.0 through 2023.Q4.4, 2023.Q3.1 through 2023.Q3.8, 7.4 GA through update 92, 7.3 GA through update 35, and older unsupported versions allows remote attackers to access arbitrary CSS and JSS files and load the files multiple times via the query string in a URL.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | com.liferay.portal:release.portal.bom | ≥ 7.4.0-ga1&&< 7.4.3.108-ga108 | 7.4.3.108-ga108 |
| ☕Maven | com.liferay.portal:com.liferay.portal.impl | all versions | 96.0.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.liferay.portal:release.portal.bom. 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 com.liferay.portal:release.portal.bom to 7.4.3.108-ga108 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-43813 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-2025-43813 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-2025-43813. 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-2025-43813 in your dependencies?
O3 detects CVE-2025-43813 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.