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I. Basic Information for CVE-2026-33748
Vulnerability Information

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Vulnerability Title
BuildKit Git URL subdir component can cause access to restricted files
Source: NVD (National Vulnerability Database)
Vulnerability Description
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to version 0.28.1, insufficient validation of Git URL fragment subdir components may allow access to files outside the checked-out Git repository root. Possible access is limited to files on the same mounted filesystem. The issue has been fixed in version v0.28.1 The issue affects only builds that use Git URLs with a subpath component. As a workaround, avoid building Dockerfiles from untrusted sources or using the subdir component from an untrusted Git repository where the subdir component could point to a symlink.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
BuildKit 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
BuildKit是Moby开源的一个并发、高速缓存高效的构建器工具包。 BuildKit 0.28.1之前版本存在后置链接漏洞,该漏洞源于对Git URL片段子目录组件验证不足,可能导致访问已检出Git仓库根目录之外的文件。
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
VendorProductAffected VersionsCPESubscribe
mobybuildkit < 0.28.1 -
II. Public POCs for CVE-2026-33748
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III. Intelligence Information for CVE-2026-33748
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IV. Related Vulnerabilities
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