What is CVE-2026-49371?

CVE-2026-49371 is a high-severity vulnerability in Jetbrains Teamcity, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-05-29.

How severe is CVE-2026-49371?

High severity. CVSS v3 base score is 7.1 out of 10.

XSS in Jetbrains Teamcity

CVE-2026-49371

In JetBrains TeamCity before 2026.1.1 reflected XSS in the keyword filter was possible

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (25.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N.

Affected products

Jetbrains Teamcity — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@jetbrains.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-49371?: CVE-2026-49371 is a high-severity vulnerability in Jetbrains Teamcity, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-05-29.
How severe is CVE-2026-49371?: High severity. CVSS v3 base score is 7.1 out of 10.