EUVD-2026-29176
GHSA-f2hf-494q-j864
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Lifecycle Timeline
3DescriptionCVE.org
In JetBrains TeamCity before 2026.1 2025.11.5 authenticated users could expose server API to unauthorised access
AnalysisAI
Authentication bypass in JetBrains TeamCity allows remote unauthenticated attackers to gain unauthorized access to server APIs. Despite the CVE description stating 'authenticated users could expose server API,' the CVSS vector (PR:N) confirms no authentication is required for exploitation, enabling direct unauthorized API access with high confidentiality impact and limited integrity impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions required for remote unauthenticated exploitation against default TeamCity configurations (CVSS AV:N/AC:L/PR:N/UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This represents a critical authentication bypass with real-world deployment risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A remote attacker identifies an internet-accessible TeamCity server through reconnaissance scanning. Without any authentication, the attacker directly accesses exposed server APIs to enumerate build configurations, extract stored credentials and API tokens, and retrieve source code repository details. … |
| Remediation | Upgrade JetBrains TeamCity to version 2026.1 or 2025.11.5 or later, depending on your maintenance branch, as documented in the vendor advisory at https://www.jetbrains.com/privacy-security/issues-fixed/. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all TeamCity instances and their current versions in your environment; immediately isolate or restrict network access to TeamCity servers if running versions prior to 2025.11.5 or 2026.1. …
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In JetBrains TeamCity before 2024.12.2 several DOM-based XSS were possible on the Code Inspection Report tab. Rated medi
In JetBrains TeamCity before 2024.12.2 improper Kubernetes connection settings could expose sensitive resources. Rated h
Information disclosure in JetBrains TeamCity prior to version 2026.1 allows authenticated low-privilege users to read se
Server-side request forgery in JetBrains TeamCity versions prior to 2026.1 and 2025.11.5 allows remote unauthenticated a
Reflected cross-site scripting in JetBrains TeamCity before version 2026.1.1 allows remote attackers to execute arbitrar
Remote code execution in JetBrains TeamCity versions prior to 2026.1 is achievable by authenticated users who can config
Credential exposure in JetBrains TeamCity before version 2026.1 allows authenticated remote attackers to retrieve sensit
Insufficient username validation in the SAML plugin of JetBrains TeamCity before 2026.1 allows unauthenticated remote at
Reflected cross-site scripting on the TeamCity repository download page allows a remote unauthenticated attacker to inje
In JetBrains TeamCity before 2025.03.3 reflected XSS on the favoriteIcon page was possible
In JetBrains TeamCity before 2025.03.3 a DOM-based XSS at the Performance Monitor page was possible
In JetBrains TeamCity before 2025.03.1 improper path validation in loggingPreset parameter was possible. Rated medium se
Same technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today