CVE-2026-42563— Dulwich 操作系统命令注入漏洞

Dulwich Vulnerable to Command Injection via Merge Driver Path

Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.24.0 and prior to version 1.2.5, Dulwich's `ProcessMergeDriver` substitutes the file path (from the git tree, controllable by an attacker via a malicious branch) into the merge driver command via the `%P` placeholder and executes it with `subprocess.run(..., shell=True)`. An attacker who can cause a victim to merge an untrusted branch can achieve arbitrary command execution by crafting malicious file paths. Version 1.2.5 fixes the issue.

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OS命令中使用的特殊元素转义处理不恰当(OS命令注入)

Dulwich 操作系统命令注入漏洞

Dulwich是Jelmer Vernooij个人开发者的一款纯Python实现的Git仓库操作接口。 Dulwich 0.24.0版本至1.2.5之前版本存在操作系统命令注入漏洞，该漏洞源于ProcessMergeDriver将文件路径替换到合并驱动命令中并执行，可能导致攻击者通过恶意分支实现任意命令执行。

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