Liferay Portal/DXP ComboServlet path traversal

Summaryinfo

A vulnerability labeled as critical has been found in Liferay Portal and DXP. Impacted is an unknown function of the component ComboServlet. Executing a manipulation can lead to path traversal. This vulnerability is tracked as CVE-2025-62254. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in Liferay Portal and DXP (the affected version unknown). This vulnerability affects an unknown part of the component ComboServlet. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at liferay.dev. This vulnerability was named CVE-2025-62254 since 10/09/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/11/2025). The MITRE ATT&CK project declares the attack technique as T1006.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at EUVD (EUVD-2025-35736) and CERT Bund (WID-SEC-2025-2397). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

• Liferay Portal
• Liferay DXP

Productinfo

Type

• Enterprise Resource Planning Software

Vendor

• Liferay

Name

• DXP
• Portal

License

• open-source

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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