EUVD-2026-92106
GHSA-3fc9-77fj-j3c7
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/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
Exploitation requires possessing valid credentials/session/token of a deactivated-org user, so PR:L; impact is incorrect authorization (I:H) with limited confidentiality exposure (C:L) and no availability impact.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
4DescriptionCVE.org
ZITADEL 4.x before 4.17.1 does not check an organization's inactive state during Login V2 authentication, verifying only the individual user's status. Users of a deactivated organization who hold valid credentials, an existing session, or a refresh token can still sign in, create sessions, and obtain or refresh tokens.
AnalysisAI
ZITADEL 4.x before 4.17.1 fails to check an organization's inactive state during Login V2 authentication, allowing users of a deactivated organization to continue signing in, create sessions, and obtain or refresh tokens if they already possess valid credentials, an existing session, or a refresh token. This authenticated access-control bypass primarily impacts offboarding and deprovisioning workflows, as it does not allow an arbitrary external attacker to gain access without prior valid credentials. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a very specific state: the target organization must be in a deactivated/inactive state in ZITADEL 4.x (before 4.17.1), AND the actor must already possess valid credentials, an existing session, or a valid refresh token for a user within that organization. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but bounded access-control flaw rather than a mass-exploitable remote code execution issue. … 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 | Upgrade to ZITADEL 4.17.1 or later, which corrects the missing organization-level inactive check (vendor advisory: https://github.com/zitadel/zitadel/security/advisories/GHSA-558c-v5wc-9w4q). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all ZITADEL 4.x deployments and identify any versions before 4.17.1; for each deactivated organization, immediately revoke active sessions and refresh tokens, disable or delete credentials, and enforce per-user deactivation. …
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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
Account takeover in ZITADEL affects instances running 3.0.0 through 3.4.15 and 4.0.0 before 4.17.3: an unauthenticated r
Cross-organization account takeover in ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 allows an authenticated attacker
Stored XSS in ZITADEL identity management platform versions 4.0.0 to 4.11.1 allows unauthenticated attackers to inject p
Account pre-hijacking in ZITADEL lets an unauthenticated remote attacker create a user record already bound to a victim'
Remote account takeover in ZITADEL versions before 4.17.1 allows unauthenticated attackers to compromise MFA-protected a
The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. Ra
The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. Ra
Unauthenticated remote attackers who know a valid user's login name can enroll attacker-controlled multi-factor authenti
ZITADEL combines the ease of Auth0 and the versatility of Keycloak.**Actions**, introduced in ZITADEL **1.42.0** on the
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-287 – Improper Authentication
View allSame technique Authentication Bypass
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External POC / Exploit Code
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