What is CVE-2025-52876?

CVE-2025-52876 is a medium-severity vulnerability in Jetbrains Teamcity, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-06-23.

How severe is CVE-2025-52876?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Jetbrains Teamcity

CVE-2025-52876

In JetBrains TeamCity before 2025.03.3 reflected XSS on the favoriteIcon page was possible

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-06-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.376 (98.5th percentile), scored 2026-09-28.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.197 · newest: 0.376 · change: +0.179

Affected products

Jetbrains Teamcity — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.jetbrains.com/privacy-security/issues-fixed/ (Vendor Advisory)

Frequently asked questions

What is CVE-2025-52876?: CVE-2025-52876 is a medium-severity vulnerability in Jetbrains Teamcity, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-06-23.
How severe is CVE-2025-52876?: Medium severity. CVSS v3 base score is 5.4 out of 10.