CVE-2026-123850: JetBrains YouTrack · Clickjacking
Affects JetBrains YouTrackSource CVE Database V5
Not known to be exploited · CVSS 3.5 Low : upgrade to 2026.2.19422 when convenient.
Data as of 6 Nov 2026, 16:34 UTC
Thin evidence
One scorer or none| CNA (JetBrains) | CVSS 3.1 | 3.5 |
|---|
- Patch
- Available – fixed in 2026.2.19422
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 6 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.
What to do
Upgrade JetBrains YouTrack to 2026.2.19422.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| JetBrainsYouTrack | Affected
| Fixed in
|
Description
In JetBrains YouTrack before 2026.2.19422 cSS injection was possible in Mermaid diagrams via configuration directives