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CVE-2026-71556— go-git: Worktree operations may follow symlinks

Quick assessment

Affected
go-git go-git
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.

go-git是go-git团队的一款基于Go语言的分布式版本控制库。 go-git 5.19.2之前版本和6.0.0-alpha.1至6.0.0-alpha.5之前版本存在后置链接漏洞，该漏洞源于工作树操作解析符号链接时未将解析范围限制在工作树边界内，可能导致恶意构造的仓库在克隆及使用工作树操作时读取或写入预期工作目录之外的文件。

CVSS 7.1 · High EPSS 0.36% · P27

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 2

VendorProduct Version RangeStatus
go-git go-git < 5.19.2 affected
>= 6.0.0-alpha.1, < 6.0.0-alpha.5 affected
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I. Basic Information for CVE-2026-71556

Vulnerability Information
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Vulnerability Title
go-git: Worktree operations may follow symlinks
Source: CVE Program / CVE List V5
Vulnerability Description
go-git is an extensible git implementation library written in pure Go. Prior to 5.19.2 and 6.0.0-alpha.5, worktree operations (including checkout, status, and add) resolve symbolic links inside the working tree without confining resolution to the worktree boundary, so a maliciously crafted repository containing a symlink can cause go-git to read from or write to files outside the intended working directory when the repository is cloned and its worktree operations are used. Versions 5.19.2 and 6.0.0-alpha.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
go-git 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
go-git是go-git团队的一款基于Go语言的分布式版本控制库。 go-git 5.19.2之前版本和6.0.0-alpha.1至6.0.0-alpha.5之前版本存在后置链接漏洞，该漏洞源于工作树操作解析符号链接时未将解析范围限制在工作树边界内，可能导致恶意构造的仓库在克隆及使用工作树操作时读取或写入预期工作目录之外的文件。
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

Vendor Product Affected Versions CPE Subscribe
go-git go-git < 5.19.2 -

II. Public POCs for CVE-2026-71556

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8442 chars
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III. Intelligence Information for CVE-2026-71556

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Patches & Fixes for CVE-2026-71556 (2)

Vendor Advisories for CVE-2026-71556 (1)

Vendor Pages for CVE-2026-71556 (1)

IV. Related Vulnerabilities

Same product: go-git
Same vendor: go-git
Same weakness: CWE-59

V. Comments for CVE-2026-71556

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