Zitadel
CVE-2026-27946
MEDIUM
GHSA-282g-fhmx-xf54
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK
1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 6.5 (MEDIUM). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. |
| Exploit ScenarioDerived | An attacker could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Zitadel versions prior to 4.11.1 and 3.4.7 permit authenticated users to bypass email and phone verification procedures through the self-management feature, allowing them to mark contact information as verified without completing actual validation. This integrity bypass enables account compromise scenarios where attackers with valid credentials can impersonate other users or escalate privileges by falsifying verified contact details. No patch is currently available for affected deployments, though implementing action rules (v2) can mitigate the risk.
Earlier versions of this analysis (1)
ZITADEL is an open source identity management platform. Prior to versions 4.11.1 and 3.4.7, a vulnerability in Zitadel's self-management capability allowed users to mark their email and phone as verified without going through an actual verification process. [CVSS 6.5 MEDIUM]
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in go
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-862 (Missing Authorization). Affects Zitadel. ZITADEL is an open source identity management platform. Prior to versions 4.11.1 and 3.4.7, a vulnerability in Zitadel's self-management capability allowed users to mark their email and phone as verified without going through an actual verification process. The patch in versions 4.11.1 and 3.4.7 resolves the issue by requiring the correct permission in case the verification flag is provided and only allows self-management of the email address and/or phone number itself. If an upgrade is not poss
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
ZITADEL is an open source identity management platform. Prior to versions 4.11.1 and 3.4.7, a vulnerability in Zitadel's self-management capability allowed users to mark their email and phone as verified without going through an actual verification process. The patch in versions 4.11.1 and 3.4.7 resolves the issue by requiring the correct permission in case the verification flag is provided and only allows self-management of the email address and/or phone number itself. If an upgrade is not possible, an action (v2) could be used to prevent setting the verification flag on the own user.
Executive ViewAI
Organizations using ZITADEL should be aware of notable risk from CVE-2026-27946, a missing authorization vulnerability rated CVSS 6.5. Attackers could gain access beyond their authorized level. Organizations should apply vendor updates when available and monitor for exploitation.
Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)GitHub Advisory
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
Authentication bypass in ZITADEL 4.x before 4.19.2 and 3.x through 3.4.15 lets an authenticated attacker with organizati
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'
Authentication bypass in ZITADEL's Login V2 UI (versions 3.0.0 through 4.19.1) allows unauthenticated attackers to take
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 username-change in ZITADEL's hosted Login V1 UI lets a remote attacker rename any active human account -
Exploit-DB