CVE-2026-123850 | BDVDB-2026-401304 Detail

JetBrainsYouTrack

Description#

In JetBrains YouTrack before 2026.2.19422 cSS injection was possible in Mermaid diagrams via configuration directives

Per CVSS v3.1: confidentiality impact none, integrity impact low, availability impact none. Attack vector: network.

No public exploit known

3.5 Low

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 11.0.

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Not classified

No specific action is recorded in the source data. Check the references for vendor guidance.

Not available

3.5 Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Not available

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).