GO-2026-6602

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Source

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

Import Source

https://vuln.go.dev/ID/GO-2026-6602.json

JSON Data

https://api.osv.dev/v1/vulns/GO-2026-6602

Aliases

CVE-2026-94447

Published

2026-10-08T22:31:09Z

Modified

2026-10-08T23:00:13Z

Summary

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

Details

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.

Database specific

{
    "review_status": "REVIEWED",
    "url": "https://pkg.go.dev/vuln/GO-2026-6602"
}

References

Affected packages

Go / toolchain

Package

Name: toolchain; View open source insights on deps.dev
Purl: pkg:golang/toolchain

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.26.9

Introduced

1.27.0-0

Fixed

1.27.2

Ecosystem specific

{
    "imports": [
        {
            "path": "cmd/go"
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-6602.json"