CVE-2026-123291
In JetBrains Datalore before 2026.4 improper owner validation allowed reading another workspace's...
In JetBrains Datalore before 2026.4 improper owner validation allowed reading another workspace's issues and runs notebook
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
In JetBrains Datalore before 2026.4 improper owner validation allowed reading another workspace's issues and runs notebook
- Record
CVE-2026-123291- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-639
- Updated
- 2026-11-06
EUVDEUVD-2026-118056
In JetBrains Datalore before 2026.4 improper owner validation allowed reading another workspace's issues and runs notebook
- Record
EUVD-2026-118056- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-06
GitHub AdvisoriesGHSA-4m7j-f8qg-366m
In JetBrains Datalore before 2026.4 improper owner validation allowed reading another workspace's...
In JetBrains Datalore before 2026.4 improper owner validation allowed reading another workspace's issues and runs notebook
- Record
GHSA-4m7j-f8qg-366m- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-639
- Updated
- 2026-11-06
NVD
In JetBrains Datalore before 2026.4 improper owner validation allowed reading another workspace's issues and runs notebook
- Record
CVE-2026-123291- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-639
- Updated
- 2026-11-07
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| published | CVE List, EUVD | |
| published | EUVD, NVD | |
| aliases, references, title | GitHub Advisories | |
| cwes, severity | CVE List | |
| first indexed | EUVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-123291 is a medium vulnerability (CVSS 4.3) in Jetbrains Datalore, published November 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. No source names a fixed version.