CVE-2026-3515 — Argument Injection in prefecthq/prefect

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
prefecthq / prefecthq/prefect	affected unspecified through latest

CWE

CWE-88

References

https://huntr.com/bounties/f3b048b8-7f4e-45ef-a5a7-cb841c39acde

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.