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CVE-2026-41506— go-git Credential leak via cross-host redirect in smart HTTP transport

Quick assessment

Affected
go-git go-git
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.

go-git是go-git开源的一个用纯 Go 编写的高度可扩展的 git 实现库。 go-git 5.18.0之前版本和6.0.0-alpha.2之前版本存在安全漏洞，该漏洞源于在智能HTTP克隆和获取操作期间跟随重定向时，可能导致HTTP认证凭据泄露。

CVSS 4.7 · Medium EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1552.004 · Private Keys

Affected Version Matrix 2

VendorProduct Version RangeStatus
go-git go-git < 5.18.0 affected
< 6.0.0-alpha.2 affected
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I. Basic Information for CVE-2026-41506

Vulnerability Information
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Vulnerability Title
go-git Credential leak via cross-host redirect in smart HTTP transport
Source: CVE Program / CVE List V5
Vulnerability Description
go-git is an extensible git implementation library written in pure Go. Prior to versions 5.18.0 and 6.0.0-alpha.2, go-git may leak HTTP authentication credentials when following redirects during smart-HTTP clone and fetch operations. This issue has been patched in versions 5.18.0 and 6.0.0-alpha.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的凭证保护机制
Source: CVE Program / CVE List V5
Vulnerability Title
go-git 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
go-git是go-git开源的一个用纯 Go 编写的高度可扩展的 git 实现库。 go-git 5.18.0之前版本和6.0.0-alpha.2之前版本存在安全漏洞，该漏洞源于在智能HTTP克隆和获取操作期间跟随重定向时，可能导致HTTP认证凭据泄露。
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 < 5.18.0 -

II. Public POCs for CVE-2026-41506

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III. Intelligence Information for CVE-2026-41506

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Vendor Advisories for CVE-2026-41506 (1)

Other References for CVE-2026-41506 (2)

IV. Related Vulnerabilities

Same product: go-git
Same vendor: go-git
Same weakness: CWE-522

V. Comments for CVE-2026-41506

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