DirectorySecurity AdvisoriesPricing
Sign in
Security Advisories

GO-2026-4871

https://pkg.go.dev/vuln/GO-2026-4871

Severity

8.8

High

CVSS V3

Eliminate CVEs with Chainguard hardened images

Build, ship, and run secure software with minimal, hardened container images — rebuilt from source daily and guarded under our industry-leading remediation SLA.

Start for free

Summary

Code execution vulnerability in SWIG code generation in cmd/go

Description

SWIG file names containing 'cgo' and well-crafted payloads could lead to code smuggling and arbitrary code execution at build time due to trust layer bypass.

  • https://nvd.nist.gov/vuln/detail/CVE-2026-27140
  • https://github.com/advisories/GHSA-5w89-2c2x-6x66
  • https://pkg.go.dev/vuln/GO-2026-4871
  • https://go.dev/cl/763768
  • https://go.dev/issue/78335
  • https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU

Affected packages

The trusted source for open source

Talk to an expert
PrivacyTerms

Product

Chainguard ContainersChainguard LibrariesChainguard VMsChainguard OS PackagesChainguard ActionsChainguard Agent SkillsIntegrationsPricing

Solutions

FedRAMPPCI DSSCMMC 2.0SOC 2Golden ImagesCVE RemediationPublic SectorStartups

Customers

Customer StoriesChainguard Reviews

Resources

Events & WebinarsSupply Chain Security 101Chainguard CoursesDocumentationTrust CenterChainguard Slack Community

Company

About UsBlogOpen Source LeadershipPartnersNewsroomCareersLegal
© 2026 Chainguard, Inc. All Rights Reserved.
Chainguard® and the Chainguard logo are registered trademarks of Chainguard, Inc. in the United States and/or other countries.
The other respective trademarks mentioned on this page are owned by the respective companies and use of them does not imply any affiliation or endorsement.