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No exploitation reportedFix available

CVE-2026-123287

Unauthorized Download of Private Notebook Files via Published Interactive Reports in JetBrains Datalore

No exploitation reported by the sources we read.

  • Published2026-11-06
  • Fixed in2026.4
  • WeaknessCWE-863

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In JetBrains Datalore before 2026.4 private notebook files could be downloaded without authentication via published interactive reports

Timeline

dates in UTC
  1. 2026-11-0610:27CVE publishedCNA

Versions per branch

NVD
Jetbrains datalore
BranchAffectedFixed in
2026.4< 2026.42026.4

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As JetBrains, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • JetBrains Dataloreother versions: not affected
    Affected
    • < 2026.4fixed in 2026.4semver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-06

Fix

  1. Update Jetbrains datalore to 2026.4

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2026-11-06
Last Modified
2026-11-12
NVD status
Analyzed
GitHub Advisory
GHSA-9xgf-fr3w-jgmq

Frequently asked questions

What is CVE-2026-123287?

In JetBrains Datalore before 2026.4 private notebook files could be downloaded without authentication via published interactive reports

Is CVE-2026-123287 actively exploited?

Active exploitation of CVE-2026-123287 has not been confirmed. Its EPSS score was 0.3% on 2026-11-11, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-123287?

CVE-2026-123287 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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Sources for this record