CVE-2025-43761 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in com.liferay:com.liferay.frontend.editor.ckeditor.web. A fix is available for com.liferay:com.liferay.frontend.editor.ckeditor.web — see the affected versions and patch details below.
Liferay Portal Reflected XSS in CKeditor 4.21.0 endpoint
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-2025-43761.
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
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
liferay-ckeditornpmDescription
A reflected cross-site scripting (XSS) vulnerability in the Liferay Portal 7.4.0 through 7.4.3.131, and Liferay DXP 2024.Q4.0 through 2024.Q4.4, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.12 and 7.4 GA through update 92 allows an remote non-authenticated attacker to inject JavaScript into the frontend-editor-ckeditor-web/ckeditor/samples/old/ajax.html path
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | com.liferay:com.liferay.frontend.editor.ckeditor.web | all versions | 5.0.107com.liferay:com.liferay.frontend.editor.ckeditor.web:5.0.107 |
| ☕Maven | com.liferay:com.liferay.frontend.js.dependencies.web | all versions | 1.0.25com.liferay:com.liferay.frontend.js.dependencies.web:1.0.25 |
| 📦npm | liferay-ckeditor | all versions | 4.21.0-liferay.10npm install liferay-ckeditor@4.21.0-liferay.10 |
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:com.liferay.frontend.editor.ckeditor.web, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update com.liferay:com.liferay.frontend.editor.ckeditor.web to 5.0.107 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-43761 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.
Frequently Asked Questions
Is CVE-2025-43761 in your dependencies?
Find it across Maven, npm, including transitive dependencies.