Exposed Notebook Code Vulnerability in JetBrains Datalore
CVE-2026-123290

5.3MEDIUM

Key Information:

Vendor

Jetbrains
Status
Datalore
Vendor
CVE Published:
6 November 2026

What is CVE-2026-123290?

JetBrains Datalore prior to version 2026.4 has a vulnerability that allows unauthenticated users to access hidden notebook code through the public interactive report content endpoint. This issue creates significant risks for data integrity and user privacy, as sensitive data may be disclosed unintentionally.

Affected Version(s)

Datalore 0 < 2026.4

References

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

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.