Improper Access Control in JetBrains YouTrack Affects User Data Security
CVE-2026-57921

4.3MEDIUM

Key Information:

Vendor

Jetbrains
Status
Youtrack
Vendor
CVE Published:
26 June 2026

What is CVE-2026-57921?

In JetBrains YouTrack, prior to version 2026.2.16593, an improper access control mechanism was identified. This vulnerability allowed unauthorized access to users' private data through the comment templates endpoint, posing a significant risk to user privacy and data security.

Affected Version(s)

YouTrack 0 < 2026.2.16593

References

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

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.