CVE-2026-44973— Billy: Path traversal vulnerabilities
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-44973
Vulnerability Information
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Vulnerability Title
Billy: Path traversal vulnerabilities
Source: NVD (National Vulnerability Database)
Vulnerability Description
Billy is an interface filesystem abstraction for Go. Prior to 5.9.0, multiple path traversal issues exist across different components of go-billy. Insufficient path sanitization and boundary enforcement may allow crafted paths (e.g., using ..) to escape intended base directories. While go-billy was not originally designed to provide a strong security boundary, some of these issues were inconsistent across some of the built-in implementations. This results in scenarios where applications relying on go-billy for some level of isolation may inadvertently expose access to unintended filesystem locations. This vulnerability is fixed in 5.9.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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
go-billy 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
go-billy是go-git开源的一个文件系统抽象接口库。 go-billy 5.9.0之前版本存在路径遍历漏洞，该漏洞源于多个组件中存在路径遍历问题，路径清理和边界执行不足可能导致访问意外文件系统位置。
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
II. Public POCs for CVE-2026-44973
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Vendor Advisories for CVE-2026-44973 (1)
IV. Related Vulnerabilities
Same vendor: go-git
- CVE-2026-44740
go-billy: Lack of depth and cycle detection in symlink resol - CVE-2026-45570
go-git: Improper single-quote escaping in go-git SSH transpo - CVE-2026-45571
go-git: Crafted repositories may modify main and submodule . - CVE-2026-45022
go-git: Improper parsing of specially crafted objects may le - CVE-2026-41506
go-git Credential leak via cross-host redirect in smart HTTP
Same weakness: CWE-22
- CVE-2026-41412
alf.io vulnerable to Arbitrary File Read and Exfil via simpl - CVE-2026-49144
BrowserStack Runner 0.9.5 Path Traversal via _default HTTP H - CVE-2026-32685
Path Traversal in gleam docs build via documentation.pages A - CVE-2026-43965
Path Traversal in build/packages/packages.toml Allows Arbitr - CVE-2026-49136
Banana Slides 0.4.0 Path Traversal via generate_image() in a
V. Comments for CVE-2026-44973
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