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TI-2026-85830 Aliases CVE-2026-123288GHSA-qc6c-q4pq-5q42

Stored XSS in JetBrains Datalore notebook charts via Vega editor link

Priority LOW 25CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

JetBrains Datalore before 2026.4 has a stored cross-site scripting flaw (CWE-79) in notebook charts. Input that is not neutralized in the Vega editor link lets attackers store script that runs in the browser of another user. Exploitation requires a user to interact with the page, and an attacker with low privileges can plant the payload. The flaw is rated with a CVSS 3.1 base score of 5.4.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

In JetBrains Datalore before 2026.4 stored XSS in notebook charts was possible via Vega editor link

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00584 48th percentileScored 2026-11-07
Fix Fixed Datalore (JetBrains): 2026.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JetBrainsDatalorebefore 2026.42026.4Patch availableCNA
  • Datalore VendorJetBrains Affected before 2026.4 Fixed in 2026.4 Patch available CNA

Remediation

Update JetBrains Datalore to version 2026.4 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Datalore (JetBrains) Fixed in 2026.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    JetBrains Datalore 2026.4

    15 records Highest priority Priority MEDIUM 1 MEDIUM, 14 LOW

    Other records, highest priority first

    • TI-2026-85995 Improper link resolution in JetBrains Datalore exposes SSH private keysPriority MEDIUM 40
    • TI-2026-85821 Incorrect authorization in JetBrains Datalore allows code execution by viewersPriority LOW 39
    • TI-2026-85993 Improper scope validation in JetBrains Datalore database tasksPriority LOW 35
    Show all 15 records →

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-123288
  2. 2026-11-06 Alias added: GHSA-qc6c-q4pq-5q42
  3. 2026-11-06 CISA SSVC decision points changed
  4. 2026-11-06 Priority changed: MEDIUM → LOW

References

Other 1

  • TI-2026-45031 Deserialization of untrusted data in JetBrains TeamCity KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18053 In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-22884 In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18054 In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions was possible KEVCVSS 3.1HIGH 7.3
  • TI-2024-15905 In JetBrains TeamCity before 2023.11.3 authentication bypass leading to RCE was possible CVSS 3.1CRITICAL 9.8
  • TI-2024-24589 Insufficiently protected credentials in JetBrains IntelliJ IDEA CVSS 3.1CRITICAL 9.3
See all 787 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences