by Kastro
Paper/Archive/CVE-2026-105209

CVE-2026-105209

zitadel zitadel — ZITADEL before 3.4.15 and 4.17.1 Cross-Organization Account Takeover via Passkey Enrollment

EPSS 0.2%CVSS 9.6
critical.is priorityof 100
31
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 12.6.126 × 202.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 contains an improper authorization vulnerability: when issuing passkey or passwordless enrollment codes, it checks only the organization in the x-zitadel-orgid header, not the target user's organization. Attackers with user-write permission in one organization can obtain an enrollment code for a user in another organization on the same instance and register their own authenticator to take over that account.

Affected

ProductAffectedFixed inSource
zitadel4.0.0 – < 4.17.14.17.1CNA
zitadel< 3.4.153.4.15CNA

Scores by source

VulnCheck (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

advisorygithub.com/zitadel/zitadel/security/advisories/GHSA-pq2q-2c6r-75c4writeupvulncheck.com/advisories/zitadel-before-3.4.15-and-4.17.1-cross-organization-account-takeover-via-passkey-enrollment