CVE-2026-94447

high

Description

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/toolchain always goes to the network for the canonical checksum.

References

https://pkg.go.dev/vuln/GO-2026-6602

https://groups.google.com/g/golang-announce/c/U2fTuyDJznI

https://go.dev/issue/81834

https://go.dev/cl/840785

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-95418

Details

Source: Mitre, NVD

Published: 2026-10-08

Updated: 2026-10-15

Named Vulnerability: GO-2026-6602Named Vulnerability: GHSA-cgx4-3g64-rvr7

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.8

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

Severity: High

EPSS

EPSS: 0.00102