Threats affecting pkg:github/prefecthq/prefect

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.

CVE-2026-3514 is an authentication bypass vulnerability in prefecthq/prefect version 3.6.19. The issue arises because the authentication middleware exempts URL paths ending with 'health' or 'ready' from authentication checks. Attackers can exploit this by creating resource names with these suffixes to access sensitive endpoints without authentication. Affected endpoints include those related to variables, flows, work pools, work queues, and deployments, potentially exposing sensitive data such as API keys and database credentials.