{"id":"CVE-2026-119129","title":"ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.19.5 Account Takeover via Device Authorization Approval","summary":"ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.19.5 contains a missing authorization vulnerability in Login V2 that allows attackers to approve OAuth 2.0 device authorizations using a victim's existing session without consent. Attackers…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-862"],"vendor":"zitadel","product":"zitadel","affected":["zitadel >= 4.0.0 < 4.19.5","zitadel >= 3.0.0 <= 3.4.15"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-29T17:12:08.195339Z"},"published":"2026-10-29","updated":"2026-10-29","sourceUpdated":"2026-10-29T17:14:47.873Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-119129","references":[{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-qj3q-235g-qr6w","label":"GitHub Security Advisory (GHSA-qj3q-235g-qr6w)"},{"url":"https://www.vulncheck.com/advisories/zitadel-3.0.0-through-3.4.15-and-4.0.0-before-4.19.5-account-takeover-via-device-authorization-approval","label":"VulnCheck Advisory: ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.19.5 Account Takeover via Device Authorization Approval"}],"tags":["cve.org"],"epss":0.00284,"epssPercentile":0.20934,"ingestedAt":"2026-11-01T21:01:32.750Z","slug":"CVE-2026-119129","body":"## Overview\n\nZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.19.5 contains a missing authorization vulnerability in Login V2 that allows attackers to approve OAuth 2.0 device authorizations using a victim's existing session without consent. Attackers can send a signed-in user a link carrying the attacker's user code to obtain the victim's tokens, and can bypass project access settings via the OIDC device authorization API.\n\n## Affected\n\n- `zitadel >= 4.0.0 < 4.19.5`\n- `zitadel >= 3.0.0 <= 3.4.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}