Checksum database bypass for golang.org/toolchain in cmd/go

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-94447 · Microsoft / collected KEV context

EUVD-2026-95418

GHSA-cgx4-3g64-rvr7

GO-2026-6602

BIT-golang-2026-94447

cve-program · CVE-2026-94447

• https://go.dev/cl/840785
• https://go.dev/issue/81834
• https://groups.google.com/g/golang-announce/c/U2fTuyDJznI
• https://pkg.go.dev/vuln/GO-2026-6602

euvd · EUVD-2026-95418

• https://go.dev/cl/840785
• https://go.dev/issue/81834
• https://groups.google.com/g/golang-announce/c/U2fTuyDJznI
• https://pkg.go.dev/vuln/GO-2026-6602

nvd · CVE-2026-94447

• https://go.dev/cl/840785
• https://go.dev/issue/81834
• https://groups.google.com/g/golang-announce/c/U2fTuyDJznI
• https://pkg.go.dev/vuln/GO-2026-6602

osv · GO-2026-6602

• https://go.dev/cl/840785
• https://go.dev/issue/81834
• https://groups.google.com/g/golang-announce/c/U2fTuyDJznI

• Previously, a user operating inside of a malicious Go project that defines a bogus golang.org/toolchain go.sum entry and operates a malicious GOMODPROXY the user chooses to use can bypass the intended checksum. We now ensure that golang.org… · Advisory content revised · 1 Nov 2026