Sherlock: Command Injection via pull_request_target in validate_modified_targets.yml
Priority HIGH 79CWE-78Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Low · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-78.
Summary
Sherlock hunts down social media accounts by username across social networks. Prior to 0.16.1, the GitHub Actions workflow validate_modified_targets.yml is vulnerable to command injection via the pull_request_target trigger. Any GitHub user can execute arbitrary commands on the CI runner and exfiltrate the GITHUB_TOKEN by opening a pull request. No approval, review, or merge is required. This vulnerability is fixed in 0.16.1.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01141 66th percentileScored 2026-11-07
Fix Fixed sherlock (sherlock-project): 0.16.1
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 |
|---|---|---|---|---|---|
| sherlock-project | sherlock | before 0.16.1 | 0.16.1 | Patch available | CNA |
- sherlock Vendorsherlock-project Affected before 0.16.1 Fixed in 0.16.1 Patch available CNA
Remediation
- Fix · CNA sherlock (sherlock-project) Fixed in 0.16.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-44590
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences