CVE-2026-105207GHSA-G8GJ-GQ47-XGF4
ZITADEL before 4.17.3 Account Takeover via External IdP Linking
- Published
- Last modified
- Status
- published
- Known exploitation
- Not listed in CISA KEV
- Fix
- Fixed in 4.17.3
- Public exploit
- None on Exploit-DB
CISA SSVC
- Exploitation: none
- Automatable: yes
- Technical impact: total
?
Decision points from CISA's Vulnrichment, assessed (SSVC 2.0.3).
SSVC documentationSummary
ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.17.3 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.
Affected versions
- zitadel zitadel
fixed in 4.17.3
- zitadel zitadel
through 4.19.4