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Back to active CVEs
High · CVSS 8.8CVE-2026-105213

ZITADEL before 4.17.1 Authentication Bypass via Login V2 for Deactivated OrganizationsCVE-2026-105213

Answer in brief

CVE-2026-105213 records a High severity (CVSS 8.8) vulnerability in ZITADEL before 4.17.1 Authentication Bypass via Login V2 for Deactivated Organizations. The current sources do not mark it as known exploited. The current feed maps zitadel/zitadel (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 4, 2026Updated Oct 4, 2026Source checked Oct 4, 2026First seen by HOL Oct 4, 2026Material review Oct 4, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps zitadel/zitadel (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
zitadel/zitadelgeneric>=0 <4.17.14.17.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for zitadel/zitadel.
  2. 2Review the reported fix. Update zitadel/zitadel to 4.17.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 4, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • ZITADEL before 4.17.3 Cross-Organization Authentication Method Enumeration via User ServiceSame zitadel/zitadel package
  • ZITADEL before 4.17.3 Account Takeover via External IdP LinkingSame zitadel/zitadel package
  • ZITADEL before 4.17.3 Session Hijacking via Forgeable IdP Intent TokensSame zitadel/zitadel package
  • ZITADEL before 3.4.15 and 4.17.1 Cross-Organization Account Takeover via Passkey EnrollmentSame zitadel/zitadel package
  • ZITADEL before 4.17.1 Unauthenticated MFA Enrollment via Login V1 Init HandlersSame zitadel/zitadel package
  • ZITADEL before 4.17.1 Authentication Bypass via Login V2 OTP returnCodeSame zitadel/zitadel package

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-287
Source
CVE List V5
Source checked
Oct 4, 2026
References
2 linked sources
Open source record