CVE-2026-5366 (GCVE-0-2026-5366)

Vulnerability from cvelistv5 – Published: 2026-06-20 16:43 – Updated: 2026-06-22 17:25
VLAI
Title
Git Argument Injection in prefecthq/prefect
Summary
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
9.9 (Critical)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 17:24 UTC
CWE
  • CWE-94 - Improper Control of Generation of Code
Assigner
@huntr_ai CNA under the mitre root
CNA scorecard C 65/100 over 40 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
prefecthq prefecthq/prefect Affected: unspecified , ≤ latest (custom)
guessed Create a notification for this product.
Show details on NVD website
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