CVE-2026-123284 json
In JetBrains Datalore before 2026.4 improper authorisation on workspace moves allowed view-only collaborators to modify shared content
published 3d ago modified 3d ago also EUVD-2026-118049
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
In JetBrains Datalore before 2026.4 improper authorisation on workspace moves allowed view-only collaborators to modify shared content
Patch / fix
- JetBrains Datalore 2026.4
Is CVE-2026-123284 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H |
Affected products
- JetBrains Datalore
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
Sources
- CVE List CVE-2026-123284
- NVD CVE-2026-123284
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.