CVE-2026-86497: CWE-201 in JetBrains YouTrack
In JetBrains YouTrack before 2026.2.18769 changing a mailbox host without re-authentication allowed a project administrator to exfiltrate stored mailbox credentials
AI Analysis
Technical Summary
CVE-2026-86497 is a vulnerability in JetBrains YouTrack prior to version 2026.2.18769 where changing the mailbox host does not trigger re-authentication. This flaw enables a project administrator to access and exfiltrate stored mailbox credentials without proper verification, violating credential confidentiality. The vulnerability is classified under CWE-201 (Information Exposure).
Potential Impact
An attacker with project administrator privileges can obtain mailbox credentials without re-authentication, leading to a confidentiality breach of sensitive information stored in YouTrack mailboxes. The CVSS score is 6.8 (medium severity), indicating a moderate risk primarily affecting confidentiality without impacting integrity or availability.
Mitigation Recommendations
A fix is available in JetBrains YouTrack version 2026.2.18769. Users should upgrade to this version or later to remediate the vulnerability. No vendor advisory content was provided to indicate alternative mitigations or temporary fixes.
CVE-2026-86497: CWE-201 in JetBrains YouTrack
Description
In JetBrains YouTrack before 2026.2.18769 changing a mailbox host without re-authentication allowed a project administrator to exfiltrate stored mailbox credentials
CVSS v3.1
Score 6.8medium
Affected software
pkg:maven/com.jetbrains/youtrackRun 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
CVE-2026-86497 is a vulnerability in JetBrains YouTrack prior to version 2026.2.18769 where changing the mailbox host does not trigger re-authentication. This flaw enables a project administrator to access and exfiltrate stored mailbox credentials without proper verification, violating credential confidentiality. The vulnerability is classified under CWE-201 (Information Exposure).
Potential Impact
An attacker with project administrator privileges can obtain mailbox credentials without re-authentication, leading to a confidentiality breach of sensitive information stored in YouTrack mailboxes. The CVSS score is 6.8 (medium severity), indicating a moderate risk primarily affecting confidentiality without impacting integrity or availability.
Mitigation Recommendations
A fix is available in JetBrains YouTrack version 2026.2.18769. Users should upgrade to this version or later to remediate the vulnerability. No vendor advisory content was provided to indicate alternative mitigations or temporary fixes.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-wppj-v3g8-h62v
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-86497"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a9f9112acd9273b49ff2b94
Added to database: 09/08/2026, 04:37:38 UTC
Last enriched: 09/08/2026, 05:09:04 UTC
Last updated: 09/09/2026, 01:51:59 UTC
Views: 15
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