CVE-2026-113603Published

x402 @x402/extensions 2.3.1 through 2.28.0 SIWX Payment Bypass via PaymentPayload.resource

cve-program · CVE-2026-113603

Published

@x402/extensions

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "x402-foundation",
                    "product": "@x402/extensions",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "2.3.1",
                            "lessThanOrEqual": "2.28.0",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "packageURL": "pkg:npm/%40x402/extensions",
                    "repo": "https://github.com/x402-foundation/x402"
                }

x402

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "x402-foundation",
                    "product": "x402",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "2.11.0",
                            "lessThanOrEqual": "2.25.0",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "repo": "https://github.com/x402-foundation/x402",
                    "packageURL": "pkg:pypi/x402"
                }

github.com/x402-foundation/x402/go/v2

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "x402-foundation",
                    "product": "github.com/x402-foundation/x402/go/v2",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "2.16.0",
                            "lessThanOrEqual": "2.28.0",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "repo": "https://github.com/x402-foundation/x402",
                    "packageURL": "pkg:golang/github.com/x402-foundation/x402/go/v2"
                }

Original source record · Cite this exact observation · Complete original publisher JSON