What is GHSA-42fh-94w4-956q?

GHSA-42fh-94w4-956q is a security advisory published by GitHub Security Advisories with High severity. An argument injection vulnerability in PrefectHQ Prefect through 3.8.2 allows authenticated users...

Which CVE IDs does GHSA-42fh-94w4-956q cover?

GHSA-42fh-94w4-956q covers the following CVE IDs: CVE-2026-72538. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-42fh-94w4-956q?

GHSA-42fh-94w4-956q has a CVSS v3 base score of 8.8, published by GitHub Security Advisories.

GHSA-42fh-94w4-956qHighCVSS 8.8

An argument injection vulnerability in PrefectHQ Prefect through 3.8.2 allows authenticated users...

Vendor

GitHub Security Advisories

Published

August 11, 2026

Last Modified

August 11, 2026

🔗 CVE IDs covered (1)

CVE-2026-72538 →

📋 Description

An argument injection vulnerability in PrefectHQ Prefect through 3.8.2 allows authenticated users to achieve remote code execution via the git_clone pull step branch field. The branch parameter is passed directly to git pull without sanitization, enabling injection of arbitrary git arguments. This represents a distinct code path from the incomplete fix applied for CVE-2026-5366 and allows command execution on the Prefect server.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-72538
https://github.com/PrefectHQ/prefect
https://github.com/advisories/GHSA-42fh-94w4-956q