CVE-2026-118762: critical vulnerability in monkeytypegame monkeytype
Monkeytype: fork PR can execute code with elevated GITHUB_TOKEN
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.3%
Monkeytype is a minimalistic and customizable typing test. Prior to 26.43.0, the .github/workflows/fix-formatting.yml workflow runs on pull_request_target with repository write permissions, checks out a fork pull request, installs dependencies from the fork's package.json, and invokes the fork-controlled oxfmt binary. Because actions/checkout persists the elevated GITHUB_TOKEN in Git configuration until after untrusted code executes, an external contributor whose pull request receives the format label can run arbitrary code, read or exfiltrate the token, and push repository content or modify pull requests and issues. The issue affects the repository CI workflow, not the Monkeytype application or user data. This issue is fixed in version 26.43.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Affected products
monkeytypegame · monkeytypeRelated CVEs — monkeytypegame monkeytype
In the same product, most dangerous first.
CVE-2024-41127HIGHMonkeytype is vulnerable to Poisoned Pipeline Execution through Code Injection in its `ci-failure-comment.yml` GitHub Workflow, enabling attackers to gain `pull-requests` write access.EPSS 0.9%CVE-2026-69183HIGHMonkeytype: Rate-limit and anti-brute-force controls bypassable via spoofed HTTP headers (forgotPasswordEmail/verificationEmail mail bombing and badAuth bypass)EPSS 0.5%CVE-2025-66563HIGHMonkeytype vulnerable to stored XSS in approve quotes pageEPSS 0.3%CVE-2025-59838LOWMonkeytype Vulnerable to Self-XSS on loading saved custom textEPSS 0.3%