PerryTS perry up to 0.5.1158 artifact_name/download_path path traversal

Summaryinfo

A vulnerability classified as critical was found in PerryTS perry up to 0.5.1158. The affected element is an unknown function. The manipulation of the argument artifact_name/download_path results in path traversal. This vulnerability was named CVE-2026-53777. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in PerryTS perry up to 0.5.1158. Affected is an unknown function. The manipulation of the argument artifact_name/download_path 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 confidentiality, integrity, and availability. CVE summarizes:

Perry before 0.5.1159 contains a path traversal vulnerability that allows a malicious build server to write arbitrary content to any location writable by the running process by supplying unsanitized path components in the artifact_name field of ArtifactReady WebSocket messages. Attackers controlling the server URL can deliver traversal payloads through the artifact_name or download_path fields, causing the client to overwrite sensitive files or expose arbitrary local files to an attacker-accessible location.

The weakness was presented by Katriel Moses. The advisory is available at github.com. This vulnerability is traded as CVE-2026-53777 since 06/10/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. 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 0.5.1159 eliminates this vulnerability.

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Productinfo

Vendor

• PerryTS

Name

• perry

Version

• 0.5.1158

Website

• Product: https://github.com/PerryTS/perry/

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