🛡️ CVE-2026-49377 — teamcity

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: Low — an ordinary user account is enough.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: None.
• Availability impact: None.

Weakness class

CVE-2026-49377 is classified as CWE-526: Cleartext Storage of Sensitive Information in an Environment Variable. The product uses an environment variable to store unencrypted sensitive information.

Affected software

CVE-2026-49377 is recorded against 1 package.

• teamcity (fixed in 2025.11.2)

Timeline and source

Published on 29 May 2026 and last revised on 22 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

www.jetbrains.com

Other advisories for this package

teamcity has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-63077 (9.8 Critical, published 27 Jul 2026)
• CVE-2026-65906 (8.8 High, published 23 Jul 2026)
• CVE-2026-59795 (8.1 High, published 10 Jul 2026)
• CVE-2026-59794 (7.3 High, published 10 Jul 2026)
• CVE-2026-59793 (8.8 High, published 10 Jul 2026)
• CVE-2026-59796 (8.1 High, published 10 Jul 2026)
• CVE-2026-49378 (4.3 Medium, published 29 May 2026)
• CVE-2026-49376 (6.5 Medium, published 29 May 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-526: Cleartext Storage of Sensitive Information in an Environment Variable) in other software:

• CVE-2026-45370 (8.0 High, published 14 May 2026)
• CVE-2026-40153 (8.0 High, published 10 Apr 2026)
• CVE-2025-36105 (4.4 Medium, published 10 Mar 2026)
• CVE-2025-27899 (5.3 Medium, published 17 Feb 2026)
• CVE-2025-36017 (6.5 Medium, published 8 Dec 2025)
• CVE-2025-9162 (4.9 Medium, published 8 Oct 2025)
• GHSA-w2wj-hw98-233h (published 21 Aug 2025)
• CVE-2025-28381 (7.5 High, published 13 Jun 2025)

Details

Affected Packages

References