CVE-2025-3526 is a high-severity (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in com.liferay.portal:com.liferay.portal.kernel. A fix is available for com.liferay.portal:com.liferay.portal.kernel — see the affected versions and patch details below.
Liferay Portal SessionClicks does not restrict the saving of request parameters in the HTTP session
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2025-3526.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
com.liferay.portal:com.liferay.portal.kernelReal-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
SessionClicks in Liferay Portal 7.0.0 through 7.4.3.21, and Liferay DXP 7.4 GA through update 9, 7.3 GA through update 25, and older unsupported versions does not restrict the saving of request parameters in the HTTP session, which allows remote attackers to consume system memory leading to denial-of-service (DoS) conditions via crafted HTTP requests.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | com.liferay.portal:com.liferay.portal.kernel | all versions | 38.0.0com.liferay.portal:com.liferay.portal.kernel:38.0.0 |
Affected Products
digital experience platformliferayliferay portalliferayDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.liferay.portal:com.liferay.portal.kernel, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update com.liferay.portal:com.liferay.portal.kernel to 38.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-3526 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
Frequently Asked Questions
Is CVE-2025-3526 in your dependencies?
Find it across Maven, including transitive dependencies.