CVSS 3.1
5.9 mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:NCVE-2026-123286
Medium (5.9) in jetbrains datalore. EPSS 0.2% estimated probability of exploitation activity in the next 30 days.
In JetBrains Datalore before 2026.4 improper authorisation allowed read the notebook owner's file storage session token
Severity
- EPSS
- 0.2% estimated probability of exploitation activity in the next 30 days; 8th percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-863 Incorrect Authorization
- OWASP Top 10
- A01:2025 Broken Access Control
- Published
- Modified
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Explain CVE-2026-123286 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-123286?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-123286?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-123286 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| JetBrains Datalore | before 2026.4 |