What is the CVSS score of CVE-2025-47851?

CVE-2025-47851 has a CVSS 3.1 base score of 4.8 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Teamcity are affected by CVE-2025-47851?

Organizations using JetBrains TeamCity should be aware of moderate risk from CVE-2025-47851, a cross-site scripting vulnerability rated CVSS 4.8.

How to fix or mitigate CVE-2025-47851?

During next maintenance window: Identify affected systems running JetBrains TeamCity and apply vendor patches when convenient. Verify Content-Security-Policy and output encoding.

Teamcity CVE-2025-47851

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2025-05-20 cve@jetbrains.com

XSS Teamcity

4.8

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:42 vuln.today

CVE Published

May 20, 2025 - 18:15 nvd

MEDIUM 4.8

DescriptionNVD

In JetBrains TeamCity before 2025.03.2 stored XSS via GitHub Checks Webhook was possible

AnalysisAI

In JetBrains TeamCity before 2025.03.2 stored XSS via GitHub Checks Webhook was possible. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. In JetBrains TeamCity before 2025.03.2 stored XSS via GitHub Checks Webhook was possible Affected products include: Jetbrains Teamcity. Version information: before 2025.03.2.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

CVE-2025-47851 vulnerability details – vuln.today

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