High severity · published Oct 15, 2026
CVE-2026-111091
In JetBrains Junie CLI before 26.8.3 code execution was possible via an untrusted project's MCP server configuration
7.8
CVSS
0.1%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JC
Junie CLI · JetBrains
before 26.8.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111091
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111091
www.jetbrains.com
https://www.jetbrains.com/privacy-security/issues-fixed/
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6.7
CVE-2026-117530
In JetBrains Junie CLI before 26.8.17 command execution was possible due to incomplete validation of allowlisted commands