CVE-2026-44590CWE-78

Sherlock: Command Injection via pull_request_target in validate_modified_targets.yml

Critical · published May 27, 2026

CVSS v3.1
9.3
EPSS
1%
Percentile
70.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.3 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.01295 · 70.1th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-05-27T19:23Z
EPSS history
Timeline
  • 27 MAY 19:23Z
    Sherlock: Command Injection via pull_request_target in validate_modified_targets.yml
    cvelistv5