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CVE-2026-109374 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CNA: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/zitadel/zitadel/security/advisories/GHSA-w4gv-rcwj-w6r5	[email protected]	AdvisoryRemedyVendor
https://www.vulncheck.com/advisories/zitadel-3.0.0-before-4.19.2-privilege-escalation-via-oidc-token-exchange-impersonation	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-863	Incorrect Authorization	[email protected]

Affected Products

Product	Versions
ZITADEL	>= 3.0.0, < 4.19.2 (semver)
CPE cpe:2.3:a:zitadel:zitadel:::::::: Remediation Upgrade: >= 4.19.2moderate efforthttps://github.com/zitadel/zitadel/releases/tag/v4.19.2 Workaround:low effort Disable impersonation in the instance security settings. Workaround:low effort Do not grant the IAM_END_USER_IMPERSONATOR and ORG_END_USER_IMPERSONATOR roles.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 13, 2026	CVE Modified	CISA-ADP
Oct 12, 2026	New CVE Received	[email protected]