CVE-2024-41127: monkeytype Injection

Description

Monkeytype is a minimalistic and customizable typing test. Monkeytype 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. The ci-failure-comment.yml workflow is triggered when the Monkey CI workflow completes. When it runs, it will download an artifact uploaded by the triggering workflow and assign the contents of ./pr_num/pr_num.txt artifact to the steps.pr_num_reader.outputs.content WorkFlow variable. It is not validated that the variable is actually a number and later it is interpolated into a JS script allowing an attacker to change the code to be executed. This issue leads to pull-requests write access. This vulnerability is fixed in 24.30.0.

Is your site exposed to CVE-2024-41127?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

8.3

HIGH

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

Weakness Type (CWE)

CWE-74 CWE-74

CWE-94 CWE-94

Affected Products

Vendor	Product	Versions
monkeytype	monkeytype	< 24.30.0

References

Advisories & Patches

https://github.com/monkeytypegame/monkeytype/commit/29627fd0d5f152e2da59671987090ea0a5c29874 https://github.com/monkeytypegame/monkeytype/security/advisories/GHSA-wcjf-5464-4wq9

Exploits

https://securitylab.github.com/advisories/GHSL-2024-167_monkeytype

Frequently Asked Questions

What is CVE-2024-41127? +

Monkeytype is a minimalistic and customizable typing test. Monkeytype 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. The ci-failure-comment.yml workflow is triggered when the Monkey CI workflow completes. When it runs, it will download an artifact uploaded by the triggering workflow and assign the contents of ./pr_num/pr_num.txt artifact to the steps.pr_num_reader.outputs.content WorkFlow variable. It is not validated that the variable is actually a number and later it is interpolated into a JS script allowing an attacker to change the code to be executed. This issue leads to pull-requests write access. This vulnerability is fixed in 24.30.0. It has a CVSS v3.1 base score of 8.3 (HIGH).

How severe is CVE-2024-41127? +

CVE-2024-41127 has a CVSS v3.1 score of 8.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-41127? +

CVE-2024-41127 affects products from monkeytype, specifically: monkeytype. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-41127? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-41237

Froxlor is open source server administration software. In version 2.3.6 and earlier, the LOC record regex uses `\s+` which matches …

CVE-2024-53263

Git LFS is a Git extension for versioning large files. When Git LFS requests credentials from Git for a remote …

CVE-2025-27107

Integrated Scripting is a tool for creating scripts for handling complex operations in Integrated Dynamics. Minecraft users who use Integrated …

CVE-2025-32699

Vulnerability in Wikimedia Foundation MediaWiki, Wikimedia Foundation Parsoid.This issue affects MediaWiki: before 1.39.12, 1.42.6, 1.43.1; Parsoid: before 0.16.5, 0.19.2, 0.20.2.

CVE-2025-40710

Host Header Injection (HHI) vulnerability in the Hotspot Shield VPN client, which can induce unexpected behaviour when accessing third-party web …

CVE-2025-6785

Securing externally available CAN wires can easily allow physical access to the CAN bus, allowing possible injection of specially formed …

CVE-2024-41127