CVE-2026-49371
JetBrains TeamCity Reflected Cross-Site Scripting Vulnerability
Description
In JetBrains TeamCity before 2026.1.1 reflected XSS in the keyword filter was possible
INFO
Published Date :
May 29, 2026, 7:16 p.m.
Last Modified :
July 22, 2026, 6:10 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 547ada31-17d8-4964-bc5f-1b8238ba8014 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update JetBrains TeamCity to 2026.1.1 or later.
- Verify the keyword filter functionality.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-49371.
| URL | Resource |
|---|---|
| https://www.jetbrains.com/privacy-security/issues-fixed/ | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-49371 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-49371
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-49371 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-49371 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 22, 2026
Action Type Old Value New Value Added Translation Title: TeamCity de JetBrains, Description: En JetBrains TeamCity antes de 2026.1.1 era posible un XSS reflejado en el filtro de palabras clave. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'JetBrains', 'product': 'TeamCity', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2026.1.1', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-49371', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-05-29T19:17:37.463979Z'} -
Initial Analysis by [email protected]
Jun. 02, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:jetbrains:teamcity:*:*:*:*:*:*:*:* versions up to (excluding) 2026.1.1 Added Reference Type JetBrains s.r.o.: https://www.jetbrains.com/privacy-security/issues-fixed/ Types: Vendor Advisory -
New CVE Received by [email protected]
May. 29, 2026
Action Type Old Value New Value Added Description In JetBrains TeamCity before 2026.1.1 reflected XSS in the keyword filter was possible Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N Added CWE CWE-79 Added Reference https://www.jetbrains.com/privacy-security/issues-fixed/