Zammad 7.0.2/7.1.0 Session Management path traversal

Summaryinfo

A vulnerability was found in Zammad 7.0.2/7.1.0. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Session Management. The manipulation results in path traversal. This vulnerability was named CVE-2026-61525. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Zammad 7.0.2/7.1.0. It has been classified as problematic. Affected is some unknown processing of the component Session Management. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity, and availability. CVE summarizes:

Zammad is a web based open source helpdesk/customer support system. In 7.0.2 and 7.1.0, zammad's session management for websocket and long-polling connections is susceptible to a path traversal attack. Session identifiers supplied by the client are insufficiently validated before being used to construct internal file paths. When the file-based session store is active (the default configuration), an authenticated attacker can manipulate the session identifier to reference locations outside the intended storage directory, leading to the deletion of arbitrary files and directories on the server. Exploitation requires only a low-privilege authenticated session and a single crafted request. Instances configured to use the Redis-based session store are not affected. This issue is fixed in versions 7.0.3 and 7.1.1.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-61525 since 07/10/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 7.0.3 or 7.1.1 eliminates this vulnerability.

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Productinfo

Name

• Zammad

Version

• 7.0.2
• 7.1.0

License

• open-source

Website

• Product: https://github.com/zammad/zammad/

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