In JetBrains Datalore before 2026.4 notebook code could execute commands in the sidecar container via the mount broker

Summary

In JetBrains Datalore before 2026.4 notebook code could execute commands in the sidecar container via the mount broker

Remediation

1. Inventory every JetBrains Datalore deployment, including staging.
2. Upgrade JetBrains Datalore to 2026.4.
3. Confirm the running version after the upgrade.

References

• Referencehttps://www.jetbrains.com/privacy-security/issues-fixed/