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.

  1. Upgrade

    Upgrade JetBrains TeamCity to 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
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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.

Contact

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