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CVE-2026-72538— PrefectHQ Prefect - Argument Injection

Quick assessment

Affected
PrefectHQ Prefect
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Prefect是Prefect组织开源的一款工作流编排与管理平台。 Prefect 3.8.2及之前版本存在命令注入漏洞，该漏洞源于git_clone pull步骤的branch字段参数未经过清理直接传递给git pull，导致参数注入，可能允许经过身份验证的用户执行任意git参数，从而实现远程代码执行。

CVSS 8.8 · High EPSS 0.98% · P62

Possible ATT&CK Techniques 1 AI

T1059.004 · Unix Shell

Affected Version Matrix 1

VendorProduct Version RangeStatus
PrefectHQ Prefect ≤ 3.8.2 affected
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I. Basic Information for CVE-2026-72538

Vulnerability Information
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Vulnerability Title
PrefectHQ Prefect - Argument Injection
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
Source: CVE Program / CVE List V5
Vulnerability Title
Prefect 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Prefect是Prefect组织开源的一款工作流编排与管理平台。 Prefect 3.8.2及之前版本存在命令注入漏洞，该漏洞源于git_clone pull步骤的branch字段参数未经过清理直接传递给git pull，导致参数注入，可能允许经过身份验证的用户执行任意git参数，从而实现远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
PrefectHQ Prefect 0 ~ 3.8.2 -

II. Public POCs for CVE-2026-72538

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 8184 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-72538

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Vendor Pages for CVE-2026-72538 (1)

IV. Related Vulnerabilities

Same product: Prefect
Same vendor: PrefectHQ
Same weakness: CWE-88