AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

JetBrainsCVE-2026-86478

JetBrains YouTrack: improper authentication

JetBrains

CVE-2026-86478 · Published Sep 7, 2026 · updated Sep 9, 2026

Critical9.8
Fix: upgrade to 2025.3.161254 or later (2 fixed versions below)
JetBrains advisory

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 versions

PackageAffectedFixed in
YouTrack
Product
< 2025.3.161254, 2026.1.140422025.3.161254, 2026.1.14042
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-290

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