What is CVE-2024-31138?

CVE-2024-31138 is a medium-severity vulnerability in Jetbrains Teamcity, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2024-03-28.

How severe is CVE-2024-31138?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Is CVE-2024-31138 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Jetbrains Teamcity

CVE-2024-31138

In JetBrains TeamCity before 2024.03 xSS was possible via Agent Distribution settings

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-03-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.747 (99.5th percentile), scored 2026-10-28.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.745 · newest: 0.747 · change: +0.002

Affected products

Jetbrains Teamcity — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2024-31138?: CVE-2024-31138 is a medium-severity vulnerability in Jetbrains Teamcity, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2024-03-28.
How severe is CVE-2024-31138?: Medium severity. CVSS v3 base score is 4.6 out of 10.
Is CVE-2024-31138 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.