CVE-2025-43737: Liferay Portal · Cross-site Scripting
Affects Liferay PortalSource CVE Database V5
Not known to be exploited · CVSS 5.1 Medium.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 19 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Liferay Portal | Affected
| Fixed in– |
AI-suggested
Organizations should prioritize upgrading to patched versions of Liferay Portal and DXP once they become available. In the interim, administrators should implement strict input validation and output encoding on the _com_liferay_journal_web_portlet_JournalPortlet_backURL parameter to neutralize malicious scripts. Web Application Firewalls (WAFs) can be configured to detect and block suspicious payloads targeting this parameter. Additionally, enforcing strong authentication mechanisms and monitoring user activity for anomalous behavior can help detect exploitation attempts. Security teams should conduct regular security assessments and penetration tests focusing on XSS vulnerabilities within the portal. Educating users about phishing and social engineering risks is also important since user interaction is required for exploitation. Finally, reviewing and minimizing the number of users with portal access can reduce the attack surface.
Description
A reflected cross-site scripting (XSS) vulnerability in the Liferay Portal 7.4.3.132, and Liferay DXP 2025.Q2.0 through 2025.Q2.8 and 2025.Q1.0 through 2025.Q1.15 allows a remote authenticated user to inject JavaScript code via _com_liferay_journal_web_portlet_JournalPortlet_backURL parameter.