CVE-2026-105207 - ZITADEL before 4.17.3 Account Takeover via External IdP Linking
Brief
CVE ID : CVE-2026-105207
Published : Oct. 4, 2026, 3:16 p. m.
- 4 hours, 15 minutes ago
Description : ZITADEL 3.
- 0 through 3.
- 15 and 4.
- 0 before 4.
- 3 creates links between user accounts and external identity providers without verifying a primary factor or the caller's permission, including on identify-only Login V2 sessions and via the User Service V2 AddIDPLink endpoint.
An unauthenticated attacker knowing a victim's login name can bind their own external IdP identity to the victim's account and then sign in as the victim.
Severity: 9.8
- CRITICAL
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