What is CVE-2023-34227?

CVE-2023-34227 is a medium-severity vulnerability in Jetbrains Teamcity, classified under CWE-749. CVSS score: 5.3/10. Published 2023-05-31.

How severe is CVE-2023-34227?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Jetbrains Teamcity

CVE-2023-34227

In JetBrains TeamCity before 2023.05 a specific endpoint was vulnerable to brute force attacks

Published 2023-05-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (42.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Jetbrains Teamcity — versions 0

Weakness classification (CWE)

CWE-749

References

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

Frequently asked questions

What is CVE-2023-34227?: CVE-2023-34227 is a medium-severity vulnerability in Jetbrains Teamcity, classified under CWE-749. CVSS score: 5.3/10. Published 2023-05-31.
How severe is CVE-2023-34227?: Medium severity. CVSS v3 base score is 5.3 out of 10.