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CVE-2026-118762

Monkeytype: fork PR can execute code with elevated GITHUB_TOKEN

CVSS score

9.3

EPSS probability

—

Risk score

0.9

Published

4 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-118762: Monkeytype Fork PR Can Execute Code with Elevated GITHUB_TOKEN

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

In Monkeytype prior to version 26.43.0, the .github/workflows/fix-formatting.yml workflow runs with repository write permissions and allows an external contributor to run code from a fork. S0 S1

Why does it matter?

This vulnerability allows attackers to read the elevated GITHUB_TOKEN in external contributions, push repository content, or manipulate pull requests and issues. S0 S1

What should be done?

  • Follow vendor advisories S0
  • Update the monkeytype version S0 S1
  • Review CI workflows S0 S1
Chain of evidence and sources2 verified claims

26.43.0 öncesi Monkeytype sürümleri, .github/workflows/fix-formatting.yml iş akışında yüksek yetkili GITHUB_TOKEN ile kod çalıştırılmasına izin verir. S0 S1

S0 · daybreach-canonicalS1 · cvelist

Yüksek yetkili GITHUB_TOKEN anahtarı, actions/checkout eklentisi tarafından güvensiz kod çalıştırılana kadar Git yapılandırmasında tutulur. S0 S1

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

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 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

CWE: CWE-829

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-118762 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1monkeytypegamemonkeytype View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
9.3CVSS V31CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:NNVD
9.3CVSS V3_1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:NCVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-118762 is associated with the following CWEs:

CWE-829: Common Weakness Enumeration Entry CWE-829

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-118762 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekiyor

Official Sources and Advisories

https://github.com/monkeytypegame/monkeytype/security/advisories/GHSA-47v3-j88w-92f8vendor-advisoryhttps://github.com/monkeytypegame/monkeytype/commit/592ce1becb9b6824badc14a803bcd9268cbea382vendor-advisoryhttps://github.com/monkeytypegame/monkeytype/releases/tag/v26.43.0vendor-advisory

CVSS Vector Radar Chart

9.3 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.RequiredConfidentialityLowIntegrityHighAvailabilityNone

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User Interaction—
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)High
Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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Weakness Type (CWE & CAPEC)

CWE-829

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CVE-2026-118762 · Monkeytype: fork PR can execute code with…