GO-2026-6809

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Source

https://pkg.go.dev/vuln/GO-2026-6809

Import Source

https://vuln.go.dev/ID/GO-2026-6809.json

JSON Data

https://api.test.osv.dev/v1/vulns/GO-2026-6809

Aliases

Published

2026-10-21T00:27:29Z

Modified

2026-10-21T00:55:36Z

Summary

Distrust compromised intermediate certificates in crypto/x509

Details

On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action.

To defend against the narrower set of cases that may remain affected, a denylist was added in crypto/x509 to return an error when calling Verify with any of the known intermediate certificates that are no longer considered to be trustworthy.

Database specific

{
    "review_status": "REVIEWED",
    "url": "https://pkg.go.dev/vuln/GO-2026-6809"
}

References

Affected packages

Go / stdlib

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.26.10

Introduced

1.27.0-0

Fixed

1.27.3

Ecosystem specific

{
    "imports": [
        {
            "path": "crypto/x509",
            "symbols": [
                "Certificate.Verify"
            ]
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-6809.json"