CVE-2026-5366

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.

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Produits concernés

• prefecthq/prefect
• Prefect prefect

Scores CVSS

Faiblesses (CWE)

• CWE-94

Références

• https://huntr.com/bounties/e2e88a0f-a8f6-49c9-94c5-e98dc385f07a ExploitThird Party Advisory
• https://huntr.com/bounties/e2e88a0f-a8f6-49c9-94c5-e98dc385f07a ExploitThird Party Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories