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Vulnerability record · CVE-2026-53777 · published 11 June 2026

CVE-2026-53777: Path traversal vulnerability

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.

8.6 CVSS 4.0 High EPSS 0.50% · top 59.9% CWE-22 · Path traversal Deferred
8.6CVSS 4.0 base score
0.50%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
14 Jul 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/PerryTS/perry/commit/95e1043df8081f67038bffce847dd9ddb3dae046
https://github.com/PerryTS/perry/pull/4989
https://github.com/PerryTS/perry/releases/tag/v0.5.1159
https://github.com/PerryTS/perry/security/advisories/GHSA-x55v-q459-68ch
https://www.vulncheck.com/advisories/perry-path-traversal-via-artifactready-websocket
https://github.com/PerryTS/perry/security/advisories/GHSA-x55v-q459-68ch

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Source: NIST National Vulnerability Database (record CVE-2026-53777), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.