EUVD-2026-92102
GHSA-hcch-574x-xrm8
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable, low-complexity authorization flaw needing a low-priv user-write role (PR:L); cross-organization impact is a scope change (S:C) with full account takeover (C:H/I:H), no availability impact.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Cross-organization account takeover in ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 allows an authenticated attacker who holds user-write permission in one organization to request a passkey or passwordless enrollment code for a user in a different organization on the same multi-tenant instance, then register their own authenticator and seize that account. The flaw is an improper authorization check (CWE-862): the server validates the organization named in the x-zitadel-orgid header instead of the target user's actual organization. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires a multi-tenant ZITADEL instance hosting at least two organizations, where the attacker already holds an account with user-write permission in any one organization; the target victim must reside in a different organization on the same instance. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine high-priority issue, not an inflated high-CVSS score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade to ZITADEL 3.4.15 or 4.17.1 (or later), which corrects the authorization check so enrollment codes are validated against the target user's organization rather than the x-zitadel-orgid header; see https://github.com/zitadel/zitadel/security/advisories/GHSA-pq2q-2c6r-75c4 for the upstream fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all ZITADEL instances running 3.x before 3.4.15 or 4.x before 4.17.1, particularly multi-tenant deployments with two or more organizations, and immediately restrict user-write permissions to only trusted administrators; audit logs for any unauthorized passkey or passwordless enrollment code requests and consider temporarily disabling passkey/passwordless enrollment features if operationally feasible. …
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Zitadel is open-source identity infrastructure software. Rated critical severity (CVSS 9.1), this vulnerability is remot
ZITADEL is an identity infrastructure system. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable
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The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. Ra
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ZITADEL Actions V1 on affected releases (3.0.0 through pre-3.4.13 and the 4.x line before 4.16.1) fails to restrict the
Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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