CVE-2026-5366 – Git Argument Injection in prefecthq/prefect

CVE ID :CVE-2026-5366

Published : June 20, 2026, 4:43 p.m. | 59 minutes ago

Description :Prefect version 3.6.23 is vulnerable to remote code execution due to improper handling of user-controlled input in the `GitRepository` storage class. The `commit_sha` parameter, which is passed to git commands, lacks validation and does not include a `–` separator to distinguish user input from git flags. This allows attackers to inject arbitrary git flags, such as `–upload-pack`, enabling execution of external programs. Additionally, the `directories` parameter can be exploited to inject git flags during sparse-checkout operations. These vulnerabilities allow any user with deployment creation permissions to execute arbitrary commands on worker machines, compromising shared work pools in multi-tenant environments.

Severity: 0.0 | NA

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