WebSocket Manipulation Vulnerability in JetBrains YouTrack
CVE-2026-86487

3.1LOW

Key Information:

Vendor

Jetbrains
Status
Youtrack
Vendor
CVE Published:
7 September 2026

What is CVE-2026-86487?

In JetBrains YouTrack versions prior to 2026.2.18634, a crafted WebSocket message can compromise the integrity of a collaborative environment by allowing read-only whiteboard users to alter canvas content. This vulnerability poses risks to user collaboration and data integrity, potentially leading to unauthorized changes and disruptions in project management workflows.

Affected Version(s)

YouTrack 0 < 2026.2.18634

References

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

CVSS V3.1

Score:
3.1
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.