CVE-2026-49378: Medium severity JetBrains TeamCity vulnerability
Published May 29, 2026
·Updated
In JetBrains TeamCity before 2026.1 credentials parameters were exposed via parameter autocompletion
Affected Software
2 affected components
JetBrains TeamCity<2026.1
JetBrains TeamCity<2026.1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
JetBrains TeamCityto a version that resolves this vulnerability.Fixed in 2026.1
Event History
May 29, 2026
CVE Published
via MITRE·06:15 PM
Data Sourced
via MITRE·06:15 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:16 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-49378?
The severity of CVE-2026-49378 is rated as medium with a score of 4.3.
2
How do I fix CVE-2026-49378?
To fix CVE-2026-49378, upgrade to JetBrains TeamCity version 2026.1 or later.
3
What impact does CVE-2026-49378 have on JetBrains TeamCity?
CVE-2026-49378 allows exposure of sensitive credential parameters through parameter autocompletion.
4
Which versions of JetBrains TeamCity are affected by CVE-2026-49378?
CVE-2026-49378 affects all versions of JetBrains TeamCity prior to 2026.1.
5
Is CVE-2026-49378 a critical vulnerability?
No, CVE-2026-49378 is considered a medium severity vulnerability.