Summaryinfo

A vulnerability classified as problematic was found in Collabora Online. The affected element is an unknown function. The manipulation of the argument CheckFileInfo BaseFileName results in path traversal. This vulnerability is cataloged as CVE-2025-27791. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Detailsinfo

A vulnerability classified as problematic has been found in Collabora Online. Affected is an unknown function. The manipulation of the argument CheckFileInfo BaseFileName with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-23. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. This is going to have an impact on integrity, and availability. CVE summarizes:

Collabora Online is a collaborative online office suite based on LibreOffice technology. In versions prior to 24.04.12.4, 23.05.19, and 22.05.25, there is a path traversal flaw in handling the CheckFileInfo BaseFileName field returned from WOPI servers. This allows for a file to be written anywhere the uid running Collabora Online can write, if such a response was supplied by a malicious WOPI server. By combining this flaw with a Time of Check, Time of Use DNS lookup issue with a WOPI server address under attacker control, it is possible to present such a response to be processed by a Collabora Online instance. This issue has been patched in versions 24.04.13.1, 23.05.19, and 22.05.25.

The advisory is available at github.com. This vulnerability is traded as CVE-2025-27791 since 03/06/2025. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 22.05.25, 23.05.19 or 24.04.13.1 eliminates this vulnerability.

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

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• Collabora

Name

• Online

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