Which products and versions are affected by CVE-2023-34220?

Affected: TeamCity (Jetbrains). The full list is in the CVE brief.

Is CVE-2023-34220 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2023-34220 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2023-34220?

No public exploit code is known.

Is there a fix for CVE-2023-34220?

Fixed versions are available, including TeamCity 2023.05.

How urgently should CVE-2023-34220 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2023-34220

Medium

In JetBrains TeamCity before 2023.05 stored XSS in the Commit Status Publisher window was possible

Published Jun 2, 2023 · Updated Jan 9, 2025

Key Facts

Patch immediately

CVE-2023-34220 is a medium-severity vulnerability (CVSS 5.4 v3.1) affecting TeamCity (Jetbrains).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 61% probability of exploitation in the next 30 days.
Fixed versions are available, including TeamCity 2023.05.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

5.4

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS (30-day exploit likelihood)

61%

Higher than 99.1% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2023-34220 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

In JetBrains TeamCity before 2023.05 stored XSS in the Commit Status Publisher window was possible

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
TeamCityJetbrains	See advisory	2023.05

Patched Releases

TeamCity

2023.05

Timeline

Publicly disclosed
Jun 2, 2023
Last updated
Jan 9, 2025

Weakness Type

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

FAQ

Common Questions.

In JetBrains TeamCity before 2023.05 stored XSS in the Commit Status Publisher window was possible
Affected: TeamCity (Jetbrains). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including TeamCity 2023.05.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2023-34220 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.