CVE-2026-44590 CRITICAL

CVE-2026-44590: Sherlock: Command Injection via pull_request_target in validate_modified_targets.yml

Vendor Sherlock-Project
Product sherlock
Weakness CWE-78
Published May 27, 2026
Last update May 28, 2026

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 27, 2026 CVE published
May 28, 2026 Record updated