# CVE-2025-62254: Liferay Portal ComboServlet denial of service via large file combination

Source: https://junglewise.ai/threats/cve-2025-62254-liferay-portal-comboservlet-denial-of-service-via-large-file  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-10-23  
License: CC BY 4.0 with a link back

CVE-2025-62254 · Severity: high · CVSS 7.5 · Published 2025-10-23

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.

Technologies: [Liferay Digital Experience Platform](https://junglewise.ai/threats/technologies/digital-experience-platform), [Liferay Portal](https://junglewise.ai/threats/technologies/portal), [com.liferay.portal:com.liferay.portal.impl (Maven)](https://junglewise.ai/threats/technologies/com-liferay-portal-com-liferay-portal-impl). Vendors: [Liferay](https://junglewise.ai/threats/vendors/liferay), [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2025-62254 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-62254 being exploited in the wild.

**How severe is CVE-2025-62254?** High severity, with a CVSS score of 7.5, published 23 October 2025.

**Which products and versions are affected?** com.liferay.portal:com.liferay.portal.impl (Maven) ECOSYSTEM:introduced=0,fixed=97.0.0.

**Is there a fix for CVE-2025-62254?** Yes. com.liferay.portal:com.liferay.portal.impl (Maven): upgrade to 97.0.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-62254?** Check whether you run Liferay Digital Experience Platform, Liferay Portal or com.liferay.portal:com.liferay.portal.impl (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- com.liferay.portal:com.liferay.portal.impl (Maven): upgrade to 97.0.0 or later

  ```sh
  # set com.liferay.portal:com.liferay.portal.impl to 97.0.0 in your pom.xml or build.gradle
  ```


## Affected products

- Liferay Digital Experience Platform
- Liferay Portal
- com.liferay.portal:com.liferay.portal.impl (Maven) ECOSYSTEM:introduced=0,fixed=97.0.0

## Identifiers

- CVE-2025-62254
- GHSA-q95h-87j6-273x

## Related threats

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- [Liferay Portal and DXP use an incorrect cache-control header](https://junglewise.ai/threats/cve-2025-62276-liferay-portal-and-dxp-use-an-incorrect-cache-control-header)
- [Multiple cross-site scripting (XSS) vulnerabilities in web content template’s select structure page in Liferay Portal…](https://junglewise.ai/threats/cve-2025-62267-liferay-portal-and-dxp-affected-by-multiple-cross-site-scripting)
- [Liferay Portal is vulnerable to XSS in the Blogs widget](https://junglewise.ai/threats/cve-2025-62265-liferay-portal-is-vulnerable-to-xss-in-the-blogs-widget)
- [Liferay Portal is vulnerable to DNS rebinding attacks](https://junglewise.ai/threats/cve-2025-62266-liferay-portal-is-vulnerable-to-dns-rebinding-attacks)