Prefect: community verdicts

1 notable / known-exploited Prefect CVE the community has triaged.

ⓘ Not an exhaustive list: we focus on the findings that matter (exploited / notable). For every Prefect CVE, see NVD ↗.

CVE-2026-5366CRIT 9.9Real · low riskEPSS 1%
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.