CVE-2026-100263
CVSS Score
4.7
EPSS Score
0.0%
EPSS Percentile
0th
In JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was possible
| CWE | CWE-79 |
| Vendor | jetbrains |
| Product | youtrack |
| Published | Sep 30, 2026 |
| Last Updated | Sep 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
JetBrains / YouTrack
0 < 2026.2.18991