Authenticated JavaScript injection via untrusted snippet parameter
Published Aug 21, 2025 · Updated Aug 21, 2025
Reflected XSS in Liferay Portal 7.4.3.132 and affected Liferay DXP releases allows remote authenticated users to execute JavaScript. In bottom_js_script.jsp, ParamUtil reads snippet directly from the HTTP request and passes it into an aui:script block without neutralization. Exploitation requires an authenticated portal session and runs attacker-supplied script in the rendered page, exposing or altering data available to that session.
Summary
What happened
Reflected XSS in Liferay Portal 7.4.3.132 and affected Liferay DXP releases allows remote authenticated users to execute JavaScript. In bottom_js_script.jsp, ParamUtil reads snippet directly from the HTTP request and passes it into an aui:script block without neutralization. Exploitation requires an authenticated portal session and runs attacker-supplied script in the rendered page, exposing or altering data available to that session.
The record
- CVE
- CVE-2025-43756
- Published
- Aug 21, 2025
- Updated
- Aug 21, 2025
- Vendor
- Liferay
- Product
- Liferay Portal
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 21, 2025CVE publishedPublication date reported by the CVE source.
- Aug 21, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7.4.3.132
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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