CVE-2026-123291 · Vendor
NO FIX YET · SEE WHAT TO DO
Before version 2026.4, JetBrains Datalore did not validate workspace ownership, so one user could read another workspace's issues and notebook runs. The attacker gets read access to data belonging to other workspaces.
first public Nov 6, 2026 · 1 source
Check it with your coding agent
It checks your repository and tells you if you’re affected, with the fix.
Teams that run JetBrains Datalore with multiple workspaces where users share the same instance. The sources do not describe further conditions, so single-workspace deployments are unknown.
Not affected if version-2026.4-or-later
Who cares datalore, jetbrains, self-hosted
2026.4.2026.4 or later.In JetBrains Datalore before 2026.4 improper owner validation allowed reading another workspace's issues and runs notebook
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
Are you affected?
Tell InfraStack what you run. It checks this one, and every next one, against your stack.
Ask from here. InfraStack checks the affected versions against your stack and answers in your inbox.
InfraStack checks the affected versions against your stack and answers in Slack, with the evidence and the fix.