What is CVE-2023-43566?

CVE-2023-43566 is a low-severity vulnerability in Jetbrains Teamcity, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2023-09-19.

How severe is CVE-2023-43566?

Low severity. CVSS v3 base score is 3.5 out of 10.

XSS in Jetbrains Teamcity

CVE-2023-43566

In JetBrains TeamCity before 2023.05.4 stored XSS was possible during nodes configuration

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-09-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.010 (62.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.010 · change: +0.001

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-2023-43566?: CVE-2023-43566 is a low-severity vulnerability in Jetbrains Teamcity, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2023-09-19.
How severe is CVE-2023-43566?: Low severity. CVSS v3 base score is 3.5 out of 10.