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.
Published: 2026-06-20
Score: 9.9 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Mon, 22 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sat, 20 Jun 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Prefecthq
Prefecthq prefecthq/prefect
Vendors & Products Prefecthq
Prefecthq prefecthq/prefect

Sat, 20 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
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.
Title Git Argument Injection in prefecthq/prefect
Weaknesses CWE-94
References
Metrics cvssV3_0

{'score': 9.9, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}


Subscriptions

Prefecthq Prefecthq/prefect
cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2026-06-22T17:25:02.152Z

Reserved: 2026-04-01T18:18:27.682Z

Link: CVE-2026-5366

cve-icon Vulnrichment

Updated: 2026-06-22T17:24:39.177Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-20T19:30:05Z

Weaknesses