What is CVE-2026-44590?

CVE-2026-44590 is a critical-severity vulnerability in Sherlock-project Sherlock, classified under OS Command Injection. CVSS score: 9.3/10. Published 2026-05-27.

How severe is CVE-2026-44590?

Critical severity. CVSS v3 base score is 9.3 out of 10.

Is CVE-2026-44590 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Sherlock-project Sherlock

CVE-2026-44590

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 use…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.014 (80.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N.

Affected products

Sherlock-project Sherlock — versions < 0.16.1

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

Astaruf/CVE-2026-44590

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-44590?: CVE-2026-44590 is a critical-severity vulnerability in Sherlock-project Sherlock, classified under OS Command Injection. CVSS score: 9.3/10. Published 2026-05-27.
How severe is CVE-2026-44590?: Critical severity. CVSS v3 base score is 9.3 out of 10.
Is CVE-2026-44590 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.