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Insufficient warning in JetBrains Toolbox App login dialog

Priority LOW 14CWE-357Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

JetBrains Toolbox App before 3.9 has an insufficient warning in its login dialog (CWE-357). The dialog does not clearly warn users before they connect to a server, so a user can be led to connect to a malicious server. The CVSS vector indicates a remote attacker needs no privileges but requires user interaction, and the impact is low integrity loss with no confidentiality or availability impact.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

In JetBrains Toolbox App before 3.9 insufficient warning in the login dialog allowed connecting to a malicious server

Why it matters now

EPSS 0.00144 3rd percentileScored 2026-11-07
Fix Fixed Toolbox App (JetBrains): 3.9

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
JetBrainsToolbox Appbefore 3.93.9Patch availableCNA
  • Toolbox App VendorJetBrains Affected before 3.9 Fixed in 3.9 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:jetbrains:toolbox:*:*:*:*:*:*:*:*——JetBrains
  • cpe:2.3:a:jetbrains:toolbox:*:*:*:*:*:*:*:* Versions — — ·JetBrains

Remediation

Update JetBrains Toolbox App to version 3.9 or later, which is listed as the fixed version.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Toolbox App (JetBrains) Fixed in 3.9

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-123320
  2. 2026-11-06 Alias added: GHSA-hm7w-w8p9-8rj2

References

  • TI-2026-45031 Deserialization of untrusted data in JetBrains TeamCity KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18053 In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-22884 In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18054 In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions was possible KEVCVSS 3.1HIGH 7.3
  • TI-2024-15905 In JetBrains TeamCity before 2023.11.3 authentication bypass leading to RCE was possible CVSS 3.1CRITICAL 9.8
  • TI-2024-24589 Insufficiently protected credentials in JetBrains IntelliJ IDEA CVSS 3.1CRITICAL 9.3
See all 787 →

Sources