Moderate severityNVD Advisory· Published Nov 29, 2025· Updated Dec 1, 2025
willitmerge has a command Injection vulnerability
CVE-2025-66219
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
willitmergenpm | <= 0.2.1 | — |
Affected products
2- shama/willitmergev5Range: <= 0.2.1
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-j9wj-m24m-7jj6ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-66219ghsaADVISORY
- github.com/shama/willitmerge/blob/2fe91d05191fb05ac6da685828d109a3a5885028/lib/willitmerge.jsghsax_refsource_MISCWEB
- github.com/shama/willitmerge/security/advisories/GHSA-j9wj-m24m-7jj6ghsax_refsource_CONFIRMWEB
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