# CVE-2026-86478

## Summary

- **CVE ID:** CVE-2026-86478
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-290
- **Published:** Sep 7, 2026
- **Last Modified:** Sep 9, 2026

## Description

In JetBrains YouTrack before 2025.3.161254, 
2026.1.14042 improper authentication in YouTrack Helpdesk allowed unauthenticated account takeover via a self-asserted email address

## Affected Products

- JetBrains — YouTrack (0)

## References

- [CNA](https://www.jetbrains.com/privacy-security/issues-fixed/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.36%
- **EPSS Percentile:** 28.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._