CVE-2025-66219
willitmerge has a command Injection vulnerability
Description
willitmerge is a command line tool to check if pull requests are mergeable. In versions 0.2.1 and prior, there is a command Injection vulnerability in willitmerge. The vulnerability manifests in this package due to the use of insecure child process execution API (exec) to which it concatenates user input, whether provided to the command-line flag, or is in user control in the target repository. At time of publication, no known fix is public.
INFO
Published Date :
Nov. 29, 2025, 2:15 a.m.
Last Modified :
Dec. 19, 2025, 3:52 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Avoid using exec with user-controlled input.
- Sanitize all user input before command execution.
- Update to a patched version when available.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-66219.
| URL | Resource |
|---|---|
| https://github.com/shama/willitmerge/blob/2fe91d05191fb05ac6da685828d109a3a5885028/lib/willitmerge.js#L189-L197 | Product |
| https://github.com/shama/willitmerge/security/advisories/GHSA-j9wj-m24m-7jj6 | Exploit Vendor Advisory |
| https://github.com/shama/willitmerge/security/advisories/GHSA-j9wj-m24m-7jj6 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-66219 is
associated with the following CWEs:
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-2025-66219
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-66219 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-66219 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Dec. 19, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:dontkry:willitmerge:*:*:*:*:*:node.js:*:* versions up to (including) 0.2.1 Added Reference Type GitHub, Inc.: https://github.com/shama/willitmerge/blob/2fe91d05191fb05ac6da685828d109a3a5885028/lib/willitmerge.js#L189-L197 Types: Product Added Reference Type GitHub, Inc.: https://github.com/shama/willitmerge/security/advisories/GHSA-j9wj-m24m-7jj6 Types: Exploit, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/shama/willitmerge/security/advisories/GHSA-j9wj-m24m-7jj6 Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Dec. 01, 2025
Action Type Old Value New Value Added Reference https://github.com/shama/willitmerge/security/advisories/GHSA-j9wj-m24m-7jj6 -
New CVE Received by [email protected]
Nov. 29, 2025
Action Type Old Value New Value Added Description willitmerge is a command line tool to check if pull requests are mergeable. In versions 0.2.1 and prior, there is a command Injection vulnerability in willitmerge. The vulnerability manifests in this package due to the use of insecure child process execution API (exec) to which it concatenates user input, whether provided to the command-line flag, or is in user control in the target repository. At time of publication, no known fix is public. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-77 Added Reference https://github.com/shama/willitmerge/blob/2fe91d05191fb05ac6da685828d109a3a5885028/lib/willitmerge.js#L189-L197 Added Reference https://github.com/shama/willitmerge/security/advisories/GHSA-j9wj-m24m-7jj6