{"id":"CVE-2026-85267","aliases":["EUVD-2026-104858","GHSA-342c-3cqc-4gph"],"status":"published","title":"Cross-Site WebSocket Hijacking in Google Cloud Shell","description":"A Cross-Site WebSocket Hijacking vulnerability in Cloud Shell prior to 2026-07-22 on Google Cloud Platform allows an unauthenticated attacker to hijack an active Cloud Shell session and exfiltrate the user's OAuth access token using a cross-origin WebSocket request.\n\n\nThis vulnerability was patched on 22 July 2026, and no customer action is needed.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Clear","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00211,"percentile":0.11358,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1385"],"published":"2026-10-20T09:16:56Z","modified":"2026-10-20T19:18:51Z","products":[{"vendor":"google cloud","product":"cloud shell"},{"vendor":"microsoft","product":"cloud shell"}],"references":[{"url":"https://docs.cloud.google.com/shell/docs/release-notes#July_28_2026"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85267"},{"url":"https://github.com/advisories/GHSA-342c-3cqc-4gph"}],"sources":{"cve":[{"id":"CVE-2026-85267","title":"Cross-Site WebSocket Hijacking in Google Cloud Shell","description":"A Cross-Site WebSocket Hijacking vulnerability in Cloud Shell prior to 2026-07-22 on Google Cloud Platform allows an unauthenticated attacker to hijack an active Cloud Shell session and exfiltrate the user's OAuth access token using a cross-origin WebSocket request.\n\n\nThis vulnerability was patched on 22 July 2026, and no customer action is needed.","status":"published","published":"2026-10-20T09:16:56.533Z","modified":"2026-10-20T19:06:21.384Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Clear","level":"high","assessor":"cna"}],"cwes":["CWE-1385"],"updated_at":"2026-11-02T14:19:52.410665Z"}],"euvd":[{"id":"EUVD-2026-104858","description":"A Cross-Site WebSocket Hijacking vulnerability in Cloud Shell prior to 2026-07-22 on Google Cloud Platform allows an unauthenticated attacker to hijack an active Cloud Shell session and exfiltrate the user's OAuth access token using a cross-origin WebSocket request.\n\n\nThis vulnerability was patched on 22 July 2026, and no customer action is needed.","status":"published","published":"2026-10-20T09:16:56Z","modified":"2026-10-20T19:06:21Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Clear","level":"high"}],"updated_at":"2026-11-02T16:59:43.145678Z"}],"ghsa":[{"id":"GHSA-342c-3cqc-4gph","title":"A Cross-Site WebSocket Hijacking vulnerability in Cloud Shell prior to 2026-07-22 on Google Cloud...","description":"A Cross-Site WebSocket Hijacking vulnerability in Cloud Shell prior to 2026-07-22 on Google Cloud Platform allows an unauthenticated attacker to hijack an active Cloud Shell session and exfiltrate the user's OAuth access token using a cross-origin WebSocket request.\n\n\nThis vulnerability was patched on 22 July 2026, and no customer action is needed.","status":"published","published":"2026-10-20T12:31:34Z","modified":"2026-10-20T12:31:39Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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:X/V:X/RE:X/U:Clear","level":"high"}],"cwes":["CWE-1385"],"updated_at":"2026-11-02T15:14:03.559653Z"}],"nvd":[{"id":"CVE-2026-85267","description":"A Cross-Site WebSocket Hijacking vulnerability in Cloud Shell prior to 2026-07-22 on Google Cloud Platform allows an unauthenticated attacker to hijack an active Cloud Shell session and exfiltrate the user's OAuth access token using a cross-origin WebSocket request.\n\n\nThis vulnerability was patched on 22 July 2026, and no customer action is needed.","status":"published","published":"2026-10-20T10:17:07.007Z","modified":"2026-10-20T19:18:51.9Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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:X/V:X/RE:X/U:Clear","level":"high","assessor":"secondary"}],"cwes":["CWE-1385"],"updated_at":"2026-11-02T14:13:01.161484Z"}]}}