# CVE-2026-123836: JetBrains Datalore SSH private key exposure in Git backup

Source: https://junglewise.ai/threats/cve-2026-123836-in-jetbrains-datalore-before-2026-4-workspace-collaborators  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-06. Updated: 2026-11-06  
License: CC BY 4.0 with a link back

CVE-2026-123836 · Severity: high · CVSS 8.8 · Published 2026-11-06

JetBrains Datalore is a collaborative data science notebook platform used by teams to develop and share analytical work. A vulnerability allowed workspace collaborators to extract the workspace owner's SSH private key through Git backup files, potentially granting unauthorized access to the owner's Git repositories and other systems that trust the key. This could enable an attacker with collaborator access to pivot to external infrastructure or steal sensitive code.

Technologies: [Jetbrains Datalore](https://junglewise.ai/threats/technologies/datalore). Vendors: [Jetbrains](https://junglewise.ai/threats/vendors/jetbrains).

## Quick answers

**Is CVE-2026-123836 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-123836 being exploited in the wild.

**How severe is CVE-2026-123836?** High severity, with a CVSS score of 8.8, published 6 November 2026.

**Which products and versions are affected?** Jetbrains Datalore before 2026.4.

**Is there a fix for CVE-2026-123836?** Yes: fixed in Datalore 2026.4. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-123836 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-123836?** Check whether you run Jetbrains Datalore at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in Datalore 2026.4

## Technical details

The vulnerability is an information disclosure flaw where SSH private keys stored in Datalore were inadequately protected during Git backup operations. Workspace collaborators could access backup data to retrieve the owner's private keys without authorization, bypassing intended access controls. The issue has been patched in version 2026.4.

## Affected products

- JetBrains Datalore before 2026.4

## Timeline

- 2026-11-06: disclosed

## References

- [https://www.jetbrains.com/privacy-security/issues-fixed/](https://www.jetbrains.com/privacy-security/issues-fixed/)

## Related threats

- [JetBrains Datalore code execution via init script race condition](https://junglewise.ai/threats/cve-2026-123835-in-jetbrains-datalore-before-2026-4-code-execution-was-possible)
- [JetBrains Datalore improper scope validation in database tasks](https://junglewise.ai/threats/cve-2026-123834-in-jetbrains-datalore-before-2026-4-improper-scope-validation-in)
- [JetBrains Datalore improper owner validation allowing workspace data access](https://junglewise.ai/threats/cve-2026-123291-in-jetbrains-datalore-before-2026-4-improper-owner-validation)
- [JetBrains Datalore information disclosure in public report endpoint](https://junglewise.ai/threats/cve-2026-123290-in-jetbrains-datalore-before-2026-4-hidden-notebook-code-was)
- [JetBrains Datalore improper authorization in notebook access control](https://junglewise.ai/threats/cve-2026-123289-in-jetbrains-datalore-before-2026-4-improper-authorisation)