willitmerge has a command Injection vulnerability
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-77.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| shama | willitmerge | up to 0.2.1 | — | No fix listed | CNA |
| — | willitmerge (npm) | up to 0.2.1 | — | No fix listed | GHSA-j9wj-m24m-7jj6 |
- willitmerge Vendorshama Affected up to 0.2.1 Fixed in — No fix listed CNA
- willitmerge (npm) Vendor— Affected up to 0.2.1 Fixed in — No fix listed GHSA-j9wj-m24m-7jj6
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-66219
- 2026-10-03 Alias added: GHSA-j9wj-m24m-7jj6
References
Sources
- CVE-2025-66219 · CVE Program
- CVE-2025-66219 · NVD
- FIRST EPSS
- GHSA-j9wj-m24m-7jj6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences