How severe is CVE-2023-34228?

CVE-2023-34228 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-34228 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-34228?

CVE-2023-34228 affects Jetbrains Teamcity. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-34228?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-34228 published?

CVE-2023-34228 was published on 2023-05-31 and last updated on 2026-06-17.

CVE-2023-34228

CVE-2023-34228 is a medium-severity vulnerability in Jetbrains Teamcity with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-308.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-308
Affected product: Jetbrains Teamcity
Published: 2023-05-31
Last modified: 2026-06-17

Description

In JetBrains TeamCity before 2023.05 authentication checks were missing – 2FA was not checked for some sensitive account actions

Frequently asked questions

What is CVE-2023-34228?: In JetBrains TeamCity before 2023.05 authentication checks were missing – 2FA was not checked for some sensitive account actions
How severe is CVE-2023-34228?: CVE-2023-34228 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-34228 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-34228?: CVE-2023-34228 affects Jetbrains Teamcity. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-34228?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-34228 published?: CVE-2023-34228 was published on 2023-05-31 and last updated on 2026-06-17.

References

https://www.jetbrains.com/privacy-security/issues-fixed/

Affected products (1)

cpe:2.3:a:jetbrains:teamcity:*:*:*:*:*:*:*:*

More vulnerabilities in Jetbrains Teamcity

CVE-2024-27198 — Critical (CVSS 9.8): In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible
CVE-2024-23917 — Critical (CVSS 9.8): In JetBrains TeamCity before 2023.11.3 authentication bypass leading to RCE was possible
CVE-2023-42793 — Critical (CVSS 9.8): In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible
CVE-2022-25263 — Critical (CVSS 9.8): JetBrains TeamCity before 2021.2.3 was vulnerable to OS command injection in the Agent Push feature configuration.
CVE-2022-24340 — Critical (CVSS 9.8): In JetBrains TeamCity before 2021.2.1, XXE during the parsing of the configuration file was possible.
CVE-2022-24331 — Critical (CVSS 9.8): In JetBrains TeamCity before 2021.1.4, GitLab authentication impersonation was possible.

All CVEs affecting Jetbrains Teamcity →

Other CWE-308 vulnerabilities

CVE-2023-49075 — High (CVSS 8.4): The Admin Classic Bundle provides a Backend UI for Pimcore. `AdminBundle\Security\PimcoreUserTwoFactorCondition`…
CVE-2026-45749 — High (CVSS 8.1): Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. The `POST…
CVE-2025-42959 — High (CVSS 8.1): An unauthenticated attacker may exploit a scenario where a Hashed Message Authentication Code (HMAC) credential,…
CVE-2024-47652 — High (CVSS 8.1): This vulnerability exists in Shilpi Client Dashboard due to implementation of inadequate authentication mechanism in…
CVE-2024-27928 — Medium (CVSS 5.9): vantage6 is an open-source infrastructure for privacy preserving analysis. Prior to version 5.0.0, if an attacker hacks…
CVE-2026-56022 — Medium (CVSS 5.3): Webmin accepts basic authentication without session cookies when an attacker provides the 'User-Agent: webmin' header,…

Browse all CWE-308 vulnerabilities →