{"id":"PYSEC-2026-2271","details":"Ray is an AI compute engine. In versions 2.53.0 and below, thedashboard HTTP server blocks browser-origin POST/PUT but does not cover DELETE, and key DELETE endpoints are unauthenticated by default. If the dashboard/agent is reachable (e.g., --dashboard-host=0.0.0.0), a web page via DNS rebinding or same-network access can issue DELETE requests that shut down Serve or delete jobs without user interaction. This is a drive-by availability impact. The fix for this vulnerability is to update to Ray 2.54.0 or higher.","aliases":["CVE-2026-27482","GHSA-q5fh-2hc8-f6rq"],"modified":"2026-07-13T07:15:44.068322497Z","published":"2026-02-21T10:16:12.380Z","references":[{"type":"ADVISORY","url":"https://github.com/ray-project/ray/releases/tag/ray-2.54.0"},{"type":"FIX","url":"https://github.com/ray-project/ray/commit/0fda8b824cdc9dc6edd763bb28dfd7d1cc9b02a4"},{"type":"FIX","url":"https://github.com/ray-project/ray/pull/60526"},{"type":"EVIDENCE","url":"https://github.com/ray-project/ray/security/advisories/GHSA-q5fh-2hc8-f6rq"}],"affected":[{"package":{"name":"ray","ecosystem":"PyPI","purl":"pkg:pypi/ray"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.54.0"}]}],"versions":["0.1.1","0.1.2","0.2.0","0.2.1","0.2.2","0.3.0","0.3.1","0.4.0","0.5.0","0.5.2","0.5.3","0.6.0","0.6.1","0.6.2","0.6.3","0.6.4","0.6.5","0.6.6","0.7.0","0.7.1","0.7.2","0.7.3","0.7.4","0.7.5","0.7.6","0.7.7","0.8.0","0.8.1","0.8.2","0.8.3","0.8.4","0.8.5","0.8.6","0.8.7","1.0.0","1.0.1","1.1.0","1.10.0","1.11.0","1.11.1","1.12.0","1.12.1","1.13.0","1.2.0","1.3.0","1.4.0","1.4.1","1.5.0","1.5.1","1.5.2","1.6.0","1.7.0","1.7.1","1.8.0","1.9.0","1.9.1","1.9.2","2.0.0","2.0.1","2.1.0","2.10.0","2.11.0","2.12.0","2.2.0","2.20.0","2.21.0","2.22.0","2.23.0","2.24.0","2.3.0","2.3.0rc0","2.3.1","2.30.0","2.31.0","2.32.0","2.32.0rc0","2.33.0","2.34.0","2.35.0","2.36.0","2.36.1","2.37.0","2.38.0","2.39.0","2.4.0","2.40.0","2.41.0","2.42.0","2.42.1","2.43.0","2.44.0","2.44.1","2.45.0","2.46.0","2.47.0","2.47.1","2.48.0","2.49.0","2.49.1","2.49.2","2.5.0","2.5.1","2.50.0","2.50.1","2.51.0","2.51.1","2.51.2","2.52.0","2.52.1","2.53.0","2.6.0","2.6.1","2.6.2","2.6.3","2.7.0","2.7.0rc0","2.7.1","2.7.2","2.8.0","2.8.1","2.9.0","2.9.1","2.9.2","2.9.3"],"ecosystem_specific":{},"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/ray/PYSEC-2026-2271.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H"}]}