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…
Toolbox App before 3.9.1 and 3.8.2, and IntelliJ IDEA before 2026.2.4, install the jetbrainsd background service. The fix is in jetbrainsd 0.9.9728.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Unclear
- Fix
- Fixed in 3.9.1, 3.8.2, 2026.2.4
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
The JetBrains Toolbox App and IntelliJ IDEA software are affected. The jetbrainsd background service could be tricked into trusting compromised intermediate certificates, which could allow an attacker to undermine the trust checks used to verify software and connections.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
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
Timeline
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- CVE published
- First seen by cve.now
- Posted on X by cve.now1 day
- Record last updated
Affected versions
- JetBrains Toolbox App
From 3.9.0 · fixed in 3.9.1; fixed in 3.8.2
- JetBrains IntelliJ IDEA
fixed in 2026.2.4
References 4
jetbrains.com
blog.jetbrains.com
emudhra.com
bugzilla.mozilla.org
Questions about CVE-2026-118697
What does this mean?
The jetbrainsd background service trusts its own built-in list of certificates, which includes compromised eMudhra intermediate certificates. An attacker who can intercept network traffic could use them to impersonate websites and services that JetBrains tools connect to.Source: blog.jetbrains.com
Am I affected, and how do I check?
Toolbox App versions before 3.9.1 (including 3.9.0) and before 3.8.2 are affected, as are IntelliJ IDEA versions before 2026.2.4. Compare the installed product version against these ranges.Source: blog.jetbrains.com
What should I do about it?
Update Toolbox App to 3.9.1 or 3.8.2 or later, and update IntelliJ IDEA to 2026.2.4 or later. The fix is in jetbrainsd 0.9.9728.Source: blog.jetbrains.com
Is it being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data