In JetBrains Toolbox App before 3.9 insufficient warning in the login dialog allowed connecting to a malicious server
Source GCVE Database
Not known to be exploited · CVSS 3.1 Low : upgrade to 3.9 when convenient.
Data as of 6 Nov 2026, 13:33 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 6 Nov 2026.
What to do
Upgrade Toolbox App to 3.9.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| JetBrainsToolbox App | Affected
| Fixed in
|
AI-suggested
Since the vulnerability requires user interaction and has high attack complexity, users should exercise caution when interacting with login dialogs and verify server authenticity.
Description
JetBrains Toolbox App versions before 3.9 have a vulnerability where the login dialog provides insufficient warning, potentially allowing users to connect to a malicious server. This issue does not impact confidentiality or availability but may allow limited integrity impact. The vulnerability has a low severity score of 3.1 and requires user interaction with high attack complexity.