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CVE-2026-49375

Quick assessment

Affected
JetBrains TeamCity
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

JetBrains TeamCity是捷克JetBrains公司的一套分布式构建管理和持续集成工具。该工具提供持续单元测试、代码质量分析和构建问题分析报告等功能。 JetBrains TeamCity 2026.1版本和2025.11.5版本之前版本存在跨站脚本漏洞，该漏洞源于仓库下载页面可能存在反射型跨站脚本攻击。

CVSS 6.1 · Medium EPSS 0.30% · P20

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
JetBrains TeamCity < 2026.1, 2025.11.5 affected
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I. Basic Information for CVE-2026-49375

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In JetBrains TeamCity before 2026.1, 2025.11.5 reflected XSS was possible on the repository download page
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
JetBrains TeamCity 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
JetBrains TeamCity是捷克JetBrains公司的一套分布式构建管理和持续集成工具。该工具提供持续单元测试、代码质量分析和构建问题分析报告等功能。 JetBrains TeamCity 2026.1版本和2025.11.5版本之前版本存在跨站脚本漏洞，该漏洞源于仓库下载页面可能存在反射型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
JetBrains TeamCity 0 ~ 2026.1, 2025.11.5 -

II. Public POCs for CVE-2026-49375

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III. Intelligence Information for CVE-2026-49375

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Vendor Pages for CVE-2026-49375 (1)

Same Patch Batch · JetBrains · 2026-05-29 · 21 CVEs total

CVE-2026-49368 8.7 HIGH JetBrains YouTrack 跨站脚本漏洞
CVE-2026-49367 8.0 HIGH JetBrains IntelliJ IDEA 安全漏洞
CVE-2026-49366 7.8 HIGH JetBrains IntelliJ IDEA 操作系统命令注入漏洞
CVE-2026-49374 7.6 HIGH JetBrains TeamCity 安全漏洞
CVE-2026-49372 7.5 HIGH JetBrains TeamCity 代码问题漏洞
CVE-2026-49371 7.1 HIGH JetBrains TeamCity 跨站脚本漏洞
CVE-2026-49373 7.1 HIGH JetBrains TeamCity 参数注入漏洞
CVE-2026-49376 6.5 MEDIUM JetBrains TeamCity 安全漏洞
CVE-2026-49386 6.5 MEDIUM JetBrains YouTrack 安全漏洞
CVE-2026-49379 6.5 MEDIUM JetBrains TeamCity 安全漏洞
CVE-2026-49385 6.5 MEDIUM JetBrains YouTrack 安全漏洞
CVE-2026-49384 6.1 MEDIUM JetBrains PyCharm 跨站脚本漏洞
CVE-2026-49382 4.5 MEDIUM JetBrains IntelliJ IDEA 安全漏洞
CVE-2026-49377 4.3 MEDIUM JetBrains TeamCity 安全漏洞
CVE-2026-49378 4.3 MEDIUM JetBrains TeamCity 安全漏洞
CVE-2026-49369 4.3 MEDIUM JetBrains YouTrack 安全漏洞
CVE-2026-49381 3.4 LOW JetBrains TeamCity 跨站脚本漏洞
CVE-2026-49370 3.4 LOW JetBrains YouTrack 安全漏洞
CVE-2026-49383 3.3 LOW JetBrains IntelliJ IDEA 代码问题漏洞
CVE-2026-49380 3.1 LOW JetBrains TeamCity 输入验证错误漏洞

IV. Related Vulnerabilities

Same product: TeamCity
Same vendor: JetBrains
Same weakness: CWE-79

V. Comments for CVE-2026-49375

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