Prefect vulnerabilities
3 known CVE vulnerabilities in Prefect, translated and rated.
- CVE-2026-72538High
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-2026-5366Critical
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 lacks validation and does not include a `--` separator, allowing injection of arbitrary git flags like `--upload-pack` to execute external programs. The `directories` parameter can also be exploited to inject git flags during sparse-checkout operations.
- CVE-2026-3515High
In Prefect version 3.6.18, the prefect-github integration injects the reference field into a git clone command without sanitization, allowing injection of git options. This can lead to SSRF, credential theft, or RCE.