In JetBrains Toolbox App before 3.9.1 and 3.8.2; IntelliJ IDEA before 2026.3 and 2026.2.4, the jetbrainsd daemon trusted compromised intermediate cert

Summary

In JetBrains Toolbox App before 3.9.1 and 3.8.2; IntelliJ IDEA before 2026.3 and 2026.2.4, the jetbrainsd daemon trusted compromised intermediate certificates

Remediation

1. Inventory every JetBrains Toolbox App deployment, including staging.
2. Upgrade JetBrains Toolbox App to the fixed version for your release line, listed under Affected versions.
3. Confirm the running version after the upgrade.

References

• Referencehttps://blog.jetbrains.com/security/2026/10/compromised-emudhra-certificates-ides/
• Referencehttps://bugzilla.mozilla.org/show_bug.cgi?id=2083449
• Referencehttps://emudhra.com/en/post/certificate-security-incident
• Referencehttps://www.jetbrains.com/privacy-security/issues-fixed/