CVE-2026-53777
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 8.6 HIGHCVSS: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/M
- EPSS
- 0.38% probability · 31th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Source
- disclosure@vulncheck.com
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.