Improper Permission Checks in JetBrains YouTrack Affecting Read-Only Users
CVE-2026-86493

6.5MEDIUM

Key Information:

Vendor

Jetbrains
Status
Youtrack
Vendor
CVE Published:
7 September 2026

What is CVE-2026-86493?

In JetBrains YouTrack, prior to version 2026.2.18634, there exists an issue where improper permission checks permit users with read-only access to create and modify whiteboard cards. This flaw can lead to unauthorized changes in content by users who should only have view permissions, posing a security risk for project management processes.

Affected Version(s)

YouTrack 0 < 2026.2.18634

References

https://www.jetbrains.com/privacy-security/issues-fixed/

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.