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TI-2026-50798 Aliases CVE-2026-72538GHSA-42fh-94w4-956q

PrefectHQ Prefect - Argument Injection

Priority MEDIUM 42CWE-88Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-88.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00977 62nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
PrefectHQPrefectup to 3.8.2—No fix listedCNA
  • Prefect VendorPrefectHQ Affected up to 3.8.2 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-72538
  2. 2026-10-03 Alias added: GHSA-42fh-94w4-956q

References

Other 1

  • TI-2026-25332 FastMCP OpenAPI Provider has an SSRF & Path Traversal Vulnerability CVSS 4.0CRITICAL 10.0
  • TI-2026-04695 Git Argument Injection in prefecthq/prefect CVSS 3.0CRITICAL 9.9
  • TI-2026-03027 Authentication Bypass in prefecthq/prefect CVSS 3.0HIGH 7.5
  • TI-2026-06805 PrefectHQ prefect WebSocket Endpoint in missing authentication CVSS 4.0MEDIUM 6.9
  • TI-2026-06804 PrefectHQ prefect Health Check API health endswith improper authentication CVSS 4.0MEDIUM 6.9
  • TI-2024-07590 CORS Misconfiguration in prefecthq/prefect CVSS 3.0HIGH 7.6
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences