CVE-2026-123320: JetBrains Toolbox App · Insufficient UI Warning of Dangerous Operations
Affects JetBrains Toolbox AppSource CVE Database V5
Not known to be exploited · CVSS 3.1 Low : upgrade to 3.9 when convenient.
Data as of 6 Nov 2026, 10:50 UTC
Thin evidence
One scorer or none| CNA (JetBrains) | CVSS 3.1 | 3.1 |
|---|
- Patch
- Available – fixed in 3.9
CVSS:3.1/AV:N/AC:H/PR:N/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 5 Nov 2026.
What to do
Upgrade JetBrains Toolbox App to 3.9.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| JetBrainsToolbox App | Affected
| Fixed in
|
AI-suggested
Upgrade JetBrains Toolbox App to version 3.9 or later, where this vulnerability has been fixed. No additional mitigation is required as the issue is resolved in the official fix.
Description
CVE-2026-123320 is a vulnerability in JetBrains Toolbox App versions before 3.9 where the login dialog provides insufficient warning when connecting to potentially malicious servers. This could lead users to unknowingly connect to dangerous servers due to inadequate UI warnings.