Zitadel
CVE-2025-27507
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Object-level authorization, IDOR prevention
|
| Impact | CVSS score of 9.0 (CRITICAL). Attack characteristics: network attack vector, low complexity, high privileges required, no user interaction not required. EPSS exploitation probability: 0.31%. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system. |
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Alert meAnalysisAIv1 – Mar 28, 2026
The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. Rated critical severity (CVSS 9.0), this vulnerability is remotely exploitable, low attack complexity.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 2 packages in go
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified under CWE-639. The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. ZITADEL's Admin API contains Insecure Direct Object Reference (IDOR) vulnerabilities that allow authenticated users, without specific IAM roles, to modify sensitive settings. While several endpoints are affected, the most critical vulnerability lies in the ability to manipulate LDAP configurations. Customers who do not utilize LDAP for authentication are not at risk from the most severe aspects of this vulnerability. However, upgrading to the patched version to address all identified issues is strongly recommended. This vulnerability is fixed in 2.71.0, 2.70.1, ,2.69.4, 2.68.4, 2.67.8, 2.66.11, 2.65.6, 2.64.5, and 2.63.8. Affected products include: Zitadel.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
Sources disagree (Low–Critical)AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L
AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L
vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. ZITADEL's Admin API contains Insecure Direct Object Reference (IDOR) vulnerabilities that allow authenticated users, without specific IAM roles, to modify sensitive settings. While several endpoints are affected, the most critical vulnerability lies in the ability to manipulate LDAP configurations. Customers who do not utilize LDAP for authentication are not at risk from the most severe aspects of this vulnerability. However, upgrading to the patched version to address all identified issues is strongly recommended. This vulnerability is fixed in 2.71.0, 2.70.1, ,2.69.4, 2.68.4, 2.67.8, 2.66.11, 2.65.6, 2.64.5, and 2.63.8.
Executive ViewAI
Organizations using open-source identity infrastructure software Zitadel face critical risk from CVE-2025-27507, a IDOR vulnerability rated CVSS 9.0. Successful exploitation could critically impact the confidentiality, integrity, and availability of affected systems. A patch is available and should be applied immediately given the critical severity.
Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
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 pre-hijacking in ZITADEL lets an unauthenticated remote attacker create a user record already bound to a victim'
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
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
Account takeover in ZITADEL's hosted Login V2 UI allows unauthenticated remote attackers to seize active users who have
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 -
Same technique Authentication Bypass
View allVendor StatusVendor
SUSE
Severity: Low| Product | Status |
|---|---|
| Container suse/sl-micro/6.0/baremetal-os-container:latest Container suse/sl-micro/6.0/base-os-container:latest Container suse/sl-micro/6.0/kvm-os-container:latest Container suse/sl-micro/6.0/rt-os-container:latest Container suse/sl-micro/6.0/toolbox:latest | Affected |
| SUSE Linux Enterprise Server 16.0 | Fixed |
| openSUSE Tumbleweed | Fixed |
| SUSE Linux Enterprise Server 16.1 | Fixed |
| SUSE Linux Enterprise Server for SAP applications 16.1 | Fixed |
Exploit-DB