go-git Credential leak via cross-host redirect in smart HTTP transport

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Summary

CVECVE-2026-41506
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 14:16:33 UTC
Updated2026-05-12 14:33:02 UTC
Descriptiongo-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.

Risk And Classification

Primary CVSS: v3.1 7.4 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

EPSS: 0.000470000 probability, percentile 0.144650000 (date 2026-05-11)

Problem Types: CWE-522 | CWE-522 CWE-522: Insufficiently Protected Credentials

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.4HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
3.1[email protected]Secondary4.7MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
3.1CNADECLARED4.7MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Go-git Project Go-git All All All All
Application Go-git Project Go-git 6.0.0 alpha1 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Go-git Go-git affected < 5.18.0 Not specified
CNA Go-git Go-git affected < 6.0.0-alpha.2 Not specified

References

ReferenceSourceLinkTags
github.com/go-git/go-git/releases/tag/v5.18.0 [email protected] github.com Product, Release Notes
github.com/go-git/go-git/releases/tag/v6.0.0-alpha.2 [email protected] github.com Product, Release Notes
github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963 [email protected] github.com Vendor Advisory
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