CVE-2026-94447

Published: Oct 8, 2026Modified: Oct 15, 2026

7.8

Vector

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

Exploitability: 1.8 / Impact: 5.9

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Related CWEs

CWE-354

Improper Validation of Integrity Check Value

The product does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.

References (4)

https://go.dev/cl/840785

Source: security@golang.org

https://go.dev/issue/81834

Source: security@golang.org

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

Source: security@golang.org

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

Source: security@golang.org

Timeline

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