CVE-2026-118762

    Dashboard / Vulnerabilities / CVE-2026-118762

    CVE-2026-118762

    Published: 29 Oct 2026Last Modified: 5 Nov 2026

    Summary: Monkeytype: fork PR can execute code with elevated GITHUB_TOKEN

    Details: 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.

    References: https://github.com/monkeytypegame/monkeytype/releases/tag/v26.43.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/118xxx/CVE-2026-118762.json, https://github.com/monkeytypegame/monkeytype/security/advisories/GHSA-47v3-j88w-92f8, https://nvd.nist.gov/vuln/detail/CVE-2026-118762, https://github.com/monkeytypegame/monkeytype/commit/592ce1becb9b6824badc14a803bcd9268cbea382

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -814d7c7ddd917eaad4e95694341127e8747a2719

    Affected versions

    v26.32.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-118762 | CVE-DB