GO-2026-4946

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Source

https://pkg.go.dev/vuln/GO-2026-4946

Import Source

https://vuln.go.dev/ID/GO-2026-4946.json

JSON Data

https://api.osv.dev/v1/vulns/GO-2026-4946

Aliases

CVE-2026-32281

Published

2026-04-07T22:53:49Z

Modified

2026-04-08T01:15:42.842270Z

Summary

Inefficient policy validation in crypto/x509

Details

Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service.

This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.

Database specific

{
    "review_status": "REVIEWED",
    "url": "https://pkg.go.dev/vuln/GO-2026-4946"
}

References

Credits

- Jakub Ciolek - https://ciolek.dev

Affected packages

Go / stdlib

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.25.9

Introduced

1.26.0-0

Fixed

1.26.2

Ecosystem specific

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

Database specific

source

"https://vuln.go.dev/ID/GO-2026-4946.json"