{"id":"CVE-2026-109374","published":"2026-10-12T17:17:35.277","lastModified":"2026-10-13T18:17:20.263","description":"ZITADEL 3.0.0 before 4.19.2 contains a privilege escalation vulnerability in OIDC token exchange that allows end-user impersonators to impersonate administrators including IAM_OWNER by bypassing the admin.impersonation check. Attackers holding IAM_END_USER_IMPERSONATOR or ORG_END_USER_IMPERSONATOR roles can sign in to relying applications as administrators with their roles and claims.","cvssScore":5.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","cwes":["CWE-863"],"vendors":[],"products":[],"references":[{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-w4gv-rcwj-w6r5","tags":[]},{"url":"https://www.vulncheck.com/advisories/zitadel-3.0.0-before-4.19.2-privilege-escalation-via-oidc-token-exchange-impersonation","tags":[]}],"exploitRefs":[{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-w4gv-rcwj-w6r5","tags":[]}],"hasPoc":true,"ai":null}