CVE-2026-49375: CWE-79 in JetBrains TeamCity
CVE-2026-49375 is a reflected cross-site scripting (XSS) vulnerability in JetBrains TeamCity versions before 2026.1. The issue occurs on the repository download page, allowing an attacker to inject malicious scripts that could be executed in the context of a user's browser session. The vulnerability has a CVSS score of 6.1, indicating a medium severity level. No official patch or remediation guidance has been provided yet by the vendor. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-49375) affects JetBrains TeamCity prior to version 2026.1 and is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation, reflected XSS). It allows an attacker to perform reflected cross-site scripting on the repository download page, potentially leading to limited confidentiality and integrity impacts via script execution in the victim's browser. The CVSS 3.1 vector indicates the attack can be performed remotely over the network with low complexity, no privileges required, but requires user interaction. The scope is changed, and the impact affects confidentiality and integrity but not availability.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary scripts in the context of a user's browser session when visiting the affected repository download page. This may lead to limited disclosure of information or manipulation of data accessible to the user. There is no indication of impact on system availability. No known exploits have been reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level has been published by JetBrains, users should monitor for updates from the vendor and consider applying any forthcoming patches promptly. Until a fix is available, cautious handling of URLs and limiting user interaction with untrusted links related to the repository download page may reduce risk.
CVE-2026-49375: CWE-79 in JetBrains TeamCity
Description
CVE-2026-49375 is a reflected cross-site scripting (XSS) vulnerability in JetBrains TeamCity versions before 2026.1. The issue occurs on the repository download page, allowing an attacker to inject malicious scripts that could be executed in the context of a user's browser session. The vulnerability has a CVSS score of 6.1, indicating a medium severity level. No official patch or remediation guidance has been provided yet by the vendor. There are no known exploits in the wild at this time.
CVSS v3.1
Score 6.1medium
Affected software
pkg:maven/org.jetbrains.teamcity/teamcity-serverRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-49375) affects JetBrains TeamCity prior to version 2026.1 and is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation, reflected XSS). It allows an attacker to perform reflected cross-site scripting on the repository download page, potentially leading to limited confidentiality and integrity impacts via script execution in the victim's browser. The CVSS 3.1 vector indicates the attack can be performed remotely over the network with low complexity, no privileges required, but requires user interaction. The scope is changed, and the impact affects confidentiality and integrity but not availability.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary scripts in the context of a user's browser session when visiting the affected repository download page. This may lead to limited disclosure of information or manipulation of data accessible to the user. There is no indication of impact on system availability. No known exploits have been reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level has been published by JetBrains, users should monitor for updates from the vendor and consider applying any forthcoming patches promptly. Until a fix is available, cautious handling of URLs and limiting user interaction with untrusted links related to the repository download page may reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-05-29T18:07:56.726Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a19dc0ee29bf47b50ff8685
Added to database: 05/29/2026, 18:33:50 UTC
Last enriched: 06/05/2026, 21:21:34 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 57
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