CVE-2026-118762 Monkeytype - Remote Code Execution

Monkeytype < 26.43.0 contains a remote code execution caused by elevated GITHUB_TOKEN persistence in CI workflow on pull_request_target, letting external contributors execute arbitrary code and modify repository content, exploit requires pull request with format label.

CVSS base score 9.3 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.32% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Published
29 October 2026
Updated
31 October 2026
Weakness
CWE-829

Vendor fix

Update to version 26.43.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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