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PatchSiren cyber security CVE debrief

CVE-2026-86482 JetBrains CVE debrief

CVE-2026-86482 debrief based on the supplied source corpus. The vulnerability affects JetBrains YouTrack before version 2026.2.18634, allowing unchecked group membership changes that can lead to privilege escalation. Defenders should assess exposure and prioritize patching or compensating controls. The CVE record and NVD entry indicate a potential privilege escalation vulnerability in JetBrains YouTrack deployments, necessitating verification of exposure and application of patches or compensating controls.

Vendor
JetBrains
Product
YouTrack
CVSS
HIGH 8.8
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

Defenders responsible for JetBrains YouTrack deployments should assess exposure and prioritize patching or compensating controls. This includes operators, platform administrators, vulnerability management teams, and security teams who need to verify exposure and apply patches or compensating controls as needed. Defenders should prioritize verification of JetBrains YouTrack deployments for exposure and apply patches,

Why it matters

Defenders should prioritize verification of JetBrains YouTrack deployments for exposure and apply patches or compensating controls as needed due to a potential privilege escalation vulnerability.

  • Potential privilege escalation in JetBrains YouTrack deployments
  • Need to verify exposure and apply patches or compensating controls

Technical summary

The CVE record and NVD entry indicate that JetBrains YouTrack before 2026.2.18634 had an unchecked group membership change vulnerability, allowing privilege escalation. This vulnerability affects JetBrains YouTrack deployments, and defenders should prioritize verification of exposure and apply patches or compensating controls as needed. The vulnerability is a privilege escalation issue due to unchecked group membership changes in JetBrains YouTrack.

Defensive priority

Defenders should prioritize verification of JetBrains YouTrack deployments for exposure and apply patches or compensating controls as needed.

Recommended defensive actions

  • Verify JetBrains YouTrack deployments for exposure
  • Apply patches or compensating controls as needed
  • Monitor for suspicious activity

Evidence notes

The CVE record and NVD entry indicate that JetBrains YouTrack before 2026.2.18634 had an unchecked group membership change vulnerability, allowing privilege escalation.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-86482 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-86482

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

  • CVE-2026-86482 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-86482

    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.