Improper Owner Validation in JetBrains Datalore Affects Multiple Workspaces
CVE-2026-123291

4.3MEDIUM

Key Information:

Vendor

Jetbrains
Status
Datalore
Vendor
CVE Published:
6 November 2026

What is CVE-2026-123291?

In JetBrains Datalore versions prior to 2026.4, a flaw in owner validation could enable users to access issues and runs from other workspaces. This vulnerability poses a risk of unauthorized data exposure, potentially compromising sensitive project information and operations across different teams.

Affected Version(s)

Datalore 0 < 2026.4

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

.