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PatchSiren cyber security CVE debrief

CVE-2026-86494 JetBrains CVE debrief

CVE-2026-86494 debrief based on CVE Program and NVD records. The vulnerability allows unauthorized changes to links on inaccessible issues when cloning a whiteboard in JetBrains YouTrack, impacting issue tracking and project management. Administrators and users should assess exposure and verify inventory. The vulnerability requires verification of affected versions and remediation efforts, with a HIGH severity score of 7.7. JetBrains YouTrack administrators and users should review vendor remediation guidance and apply patches as necessary.

Vendor
JetBrains
Product
YouTrack
CVSS
HIGH 7.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-07
Original CVE updated
2026-09-07
Advisory published
2026-09-07
Advisory updated
2026-09-07

Who should care

JetBrains YouTrack administrators and users, as well as security teams and vulnerability management teams, should assess exposure and verify inventory. Operators and platform administrators should review vendor remediation guidance and apply patches as necessary to prevent unauthorized changes to links on inaccessible issues.

Why it matters

CVE-2026-86494 is a HIGH-severity vulnerability in JetBrains YouTrack, allowing unauthorized changes to links on inaccessible issues when cloning a whiteboard. JetBrains YouTrack administrators and users should assess exposure and verify inventory. The vulnerability requires verification of affected versions and remediation efforts.

  • Potential unauthorized changes to links on inaccessible issues
  • Need to verify inventory and apply patches
  • Possible impact on issue tracking and project management

Technical summary

CVE-2026-86494 is a HIGH-severity vulnerability in JetBrains YouTrack, allowing unauthorized changes to links on inaccessible issues when cloning a whiteboard. The vulnerability impacts issue tracking and project management, requiring verification of affected versions and remediation efforts. Administrators should review vendor remediation guidance and apply patches as necessary.

Defensive priority

Assess exposure and verify inventory for JetBrains YouTrack instances

Recommended defensive actions

  • Assess exposure and verify inventory for JetBrains YouTrack instances
  • Verify vendor remediation and apply patches
  • Monitor for suspicious activity on YouTrack instances

Evidence notes

CVE Program and NVD records indicate cloning a whiteboard in JetBrains YouTrack allowed unauthorized changes to links on inaccessible issues. Evidence is limited to CVE and NVD details, with no additional information available on exploitation or affected versions. Defenders should verify affected scope and apply patches as necessary.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-86494 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-86494

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-86494 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-86494

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.