A vulnerability in the `GitHubRepository` block of the `prefect-github` integration in Prefect version 3.6.18 allows an attacker to inject arbitrary git command-line options via the `reference` field. The `reference` field is concatenated directly into a `git clone` command string without proper sanitization, and then parsed by `shlex.split()`. This enables injection of options such as `-c`, leading to potential Server-Side Request Forgery (SSRF), credential theft, or remote code execution (RCE). The vulnerability affects both the `aget_directory()` and `get_directory()` methods in `src/integrations/prefect-github/prefect_github/repository.py`. This issue does not affect the GitLab and BitBucket integrations, which use a safer list-based command construction approach.
History

Tue, 26 May 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 25 May 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Prefecthq
Prefecthq prefect
Vendors & Products Prefecthq
Prefecthq prefect

Sun, 24 May 2026 05:00:00 +0000

Type Values Removed Values Added
Description A vulnerability in the `GitHubRepository` block of the `prefect-github` integration in Prefect version 3.6.18 allows an attacker to inject arbitrary git command-line options via the `reference` field. The `reference` field is concatenated directly into a `git clone` command string without proper sanitization, and then parsed by `shlex.split()`. This enables injection of options such as `-c`, leading to potential Server-Side Request Forgery (SSRF), credential theft, or remote code execution (RCE). The vulnerability affects both the `aget_directory()` and `get_directory()` methods in `src/integrations/prefect-github/prefect_github/repository.py`. This issue does not affect the GitLab and BitBucket integrations, which use a safer list-based command construction approach.
Title Argument Injection in prefecthq/prefect
Weaknesses CWE-88
References
Metrics cvssV3_0

{'score': 8.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published: 2026-05-24T03:32:32.001Z

Updated: 2026-05-26T15:21:15.817Z

Reserved: 2026-03-04T15:06:23.397Z

Link: CVE-2026-3515

cve-icon Vulnrichment

Updated: 2026-05-26T15:21:11.233Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-24T05:16:39.167

Modified: 2026-05-26T20:06:20.310

Link: CVE-2026-3515

cve-icon Redhat

No data.