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CVE-2026-3515— Argument Injection in prefecthq/prefect

Quick assessment

Affected
prefecthq prefecthq/prefect
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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开源的一款工作流编排工具，使开发人员能够构建、观察数据管道并对数据管道做出反应。 Prefect 3.6.18版本存在参数注入漏洞，该漏洞源于prefect-github集成中GitHubRepository块的 reference 字段被直接拼接到git clone命令字符串中且未进行适当清理，可能导致攻击者注入任意git命令行选项，进而导致服务端请求伪造、凭据窃取或远程代码执行。

AI Predicted 8.1 Difficulty: Easy EPSS 0.48% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
prefecthq prefecthq/prefect unspecified≤ latest affected
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I. Basic Information for CVE-2026-3515

Vulnerability Information
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Vulnerability Title
Argument Injection in prefecthq/prefect
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the `GitHubRepository` block of the `prefect-github` integration in Prefect version 3.6.18 allows an attacker to inject arbitrary git command-line options via the `reference` field. The `reference` field is concatenated directly into a `git clone` command string without proper sanitization, and then parsed by `shlex.split()`. This enables injection of options such as `-c`, leading to potential Server-Side Request Forgery (SSRF), credential theft, or remote code execution (RCE). The vulnerability affects both the `aget_directory()` and `get_directory()` methods in `src/integrations/prefect-github/prefect_github/repository.py`. This issue does not affect the GitLab and BitBucket integrations, which use a safer list-based command construction approach.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
Source: CVE Program / CVE List V5
Vulnerability Title
Prefect 参数注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Prefect是Prefect开源的一款工作流编排工具，使开发人员能够构建、观察数据管道并对数据管道做出反应。 Prefect 3.6.18版本存在参数注入漏洞，该漏洞源于prefect-github集成中GitHubRepository块的 reference 字段被直接拼接到git clone命令字符串中且未进行适当清理，可能导致攻击者注入任意git命令行选项，进而导致服务端请求伪造、凭据窃取或远程代码执行。
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 prefecthq/prefect unspecified ~ latest -

II. Public POCs for CVE-2026-3515

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III. Intelligence Information for CVE-2026-3515

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Vendor Advisories for CVE-2026-3515 (1)

IV. Related Vulnerabilities

Same product: prefecthq/prefect
Same vendor: prefecthq
Same weakness: CWE-88