CVE-2025-43757: Liferay Portal · Cross-site Scripting
Affects Liferay PortalSource CVE Database V5
Not known to be exploited · CVSS 4.8 Medium.
Data as of 26 Oct 2026, 10:12 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 20 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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Liferay Portal | Affected
| Fixed in– |
AI-suggested
European organizations should implement the following specific mitigations: 1) Immediately audit and restrict user privileges to minimize the number of users with access to vulnerable Liferay versions, reducing the pool of potential attackers. 2) Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious payloads targeting the _com_liferay_dynamic_data_mapping_web_portlet_DDMPortlet_definition parameter. 3) Conduct thorough input validation and output encoding on all user-supplied data within custom Liferay portlets or extensions to prevent injection of malicious scripts. 4) Monitor logs for unusual activity or repeated attempts to exploit this parameter, focusing on authenticated user sessions. 5) Engage with Liferay support or community channels to obtain patches or updates as soon as they become available and prioritize their deployment in test and production environments. 6) Educate users about phishing and social engineering risks that could leverage XSS vulnerabilities to escalate attacks. 7) Consider isolating or segmenting Liferay Portal instances to limit lateral movement if exploitation occurs.
Description
A reflected cross-site scripting (XSS) vulnerability in the Liferay Portal 7.4.0 through 7.4.3.132, and Liferay DXP 2025.Q2.0 through 2025.Q2.2, 2025.Q1.0 through 2025.Q1.14, 2024.Q4.0 through 2024.Q4.7, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.1 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.18 and 7.4 GA through update 92 allows a remote authenticated attacker to inject JavaScript code via _com_liferay_dynamic_data_mapping_web_portlet_DDMPortlet_definition parameter.