CVE-2025-62254 Liferay Portal ComboServlet denial of service via large file combination
Remote attackers can cause denial of service in Liferay Portal by sending crafted requests to the ComboServlet, which fails to limit file combination size.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-62254?
CVE-2025-62254 is a medium-severity denial of service vulnerability in Liferay Digital Experience Platform, published on 23 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The ComboServlet in Liferay Portal 7.4.0 through 7.4.3.111, and older unsupported versions, and Liferay DXP 2023.Q4.0 through 2023.Q4.2, 2023.Q3.1 through 2023.Q3.5, 7.4 GA through update 92, 7.3 GA through update 35, and older unsupported versions does not limit the number or size of the files it will combine, which allows remote attackers to create very large responses that lead to a denial of service attack via the URL query string.
Weakness: CWE-22
Which versions are affected by CVE-2025-62254?
2 open source packages ship an affected version, including com.liferay.portal:com.liferay.portal.impl. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
com.liferay.portal:com.liferay.portal.impl Maven | All versions | 97.0.0 |
com.liferay.portal:com.liferay.portal.impl Maven | All versions | 97.0.0 |
Products include Liferay Digital Experience Platform, Liferay Liferay Portal.
How do I fix CVE-2025-62254?
Upgrade com.liferay.portal:com.liferay.portal.impl to 97.0.0 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-2025-62254 being exploited?
There is no known exploitation of CVE-2025-62254 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-q95h-87j6-273x.