CVE-2025-43764 Liferay Portal ReDoS with Role Name search in KaleoDesignerPortlet
Authenticated users can cause browser hangs via malicious regex in Kaleo Designer portlet, requiring an upgrade to Liferay Portal or DXP.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-43764?
CVE-2025-43764 is a medium-severity denial of service vulnerability in Liferay Digital Experience Platform, published on 23 Aug 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Self-ReDoS (Regular expression Denial of Service) exists with Role Name search field of Kaleo Designer portlet JavaScript in Liferay Portal 7.4.0 through 7.4.3.131, and Liferay DXP 2024.Q4.0 through 2024.Q4.1, 2024.Q3.0 through 2024.Q3.13, 2024.Q2.1 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.20 and 7.4 GA through update 92, which allows authenticated users with permissions to update Kaleo Workflows to enter a malicious Regex pattern causing their browser to hang for a very long time.
Weakness: CWE-1333
Which versions are affected by CVE-2025-43764?
2 open source packages ship an affected version, including com.liferay:com.liferay.portal.workflow.kaleo.designer.web. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
com.liferay:com.liferay.portal.workflow.kaleo.designer.web Maven | All versions | 5.0.145 |
com.liferay:com.liferay.portal.workflow.kaleo.designer.web Maven | All versions | 5.0.145 |
Products include Liferay Digital Experience Platform, Liferay Liferay Portal.
How do I fix CVE-2025-43764?
Upgrade com.liferay:com.liferay.portal.workflow.kaleo.designer.web to 5.0.145 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-43764 being exploited?
There is no known exploitation of CVE-2025-43764 in the wild and no public exploit code.
Other vulnerabilities in Liferay Digital Experience Platform
- CVE-2024-8980 Liferay Portal and Liferay DXP Vulnerable to CSRF in the Script Console
- CVE-2023-42496 Liferay Portal and Liferay DXP vulnerable to reflected Cross-site Scripting
- CVE-2023-42498 Liferay Portal Language Override edit screen and Liferay DXP vulnerable to reflected Cross-site Scripting
- CVE-2024-25147 Liferay Portal and Liferay DXP vulnerable to Cross-site Scripting
- CVE-2024-26269 Liferay Portal Frontend JS module's portlet.js and Liferay DXP vulnerable to Cross-site Scripting
Sources
Also known as GHSA-23w4-rpc6-wpcc.