What’s Vulnerable › Vulnerabilities

CVE-2026-86479

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-07 · updated 2026-09-09
• Weakness: CWE-862

Description

In JetBrains YouTrack before 2026.2.18788, 2026.1.14055, 2025.3.161254 missing authorisation allowed access to restricted REST API resources via IDOR

Affected products

• JetBrains YouTrack: before 2026.2.18788, 2026.1.14055, 2025.3.161254 — fixed in 2025.3.161254, 2026.1.14055, 2026.2.18788

How to fix

Upgrade to a fixed version: JetBrains YouTrack 2025.3.161254, 2026.1.14055, 2026.2.18788. Check the vendor advisory for mitigations.

References

• https://www.jetbrains.com/privacy-security/issues-fixed/

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