In JetBrains YouTrack before 2026.2.18634 a shared token cache allowed cross-tenant theft of GitHub App installation tokens

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.jetbrains.com/privacy-security/issues-fixed/ cve-icon cve-icon
History

Mon, 07 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
Title Cross‑Tenant Token Theft in JetBrains YouTrack

Mon, 07 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Description In JetBrains YouTrack before 2026.2.18634 a shared token cache allowed cross-tenant theft of GitHub App installation tokens
Weaknesses CWE-488
References
Metrics cvssV3_1

{'score': 8.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: JetBrains

Published:

Updated: 2026-09-07T16:26:46.104Z

Reserved: 2026-09-07T16:13:37.497Z

Link: CVE-2026-86492

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-07T17:17:27.517

Modified: 2026-09-07T17:17:27.517

Link: CVE-2026-86492

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-07T17:30:06Z

Weaknesses