{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-70658",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-04T21:48:08.613Z",
        "datePublished": "2026-09-14T17:14:57.207Z",
        "dateUpdated": "2026-09-14T18:57:30.947Z"
    },
    "containers": {
        "cna": {
            "title": "pay-rails/pay: non-constant-time HMAC comparison in Paddle Billing webhook signature verifier",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-208",
                            "lang": "en",
                            "description": "CWE-208: Observable Timing Discrepancy",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 7.4,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/pay-rails/pay/security/advisories/GHSA-mjgf-xj26-9qf9",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/pay-rails/pay/security/advisories/GHSA-mjgf-xj26-9qf9"
                },
                {
                    "name": "https://github.com/pay-rails/pay/commit/ba6494109d88209fba2a4df2d9d6373fe81ed805",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/pay-rails/pay/commit/ba6494109d88209fba2a4df2d9d6373fe81ed805"
                },
                {
                    "name": "https://github.com/pay-rails/pay/releases/tag/v11.6.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/pay-rails/pay/releases/tag/v11.6.2"
                }
            ],
            "affected": [
                {
                    "vendor": "pay-rails",
                    "product": "pay",
                    "versions": [
                        {
                            "version": "< 11.6.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-14T17:14:57.207Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Pay is a payments engine for Ruby on Rails 6.0 and higher. Prior to 11.6.2, Pay::Webhooks::PaddleBillingController#valid_signature? in app/controllers/pay/webhooks/paddle_billing_controller.rb compares the computed 64-character SHA-256 HMAC with the attacker-controlled h1 token from the Paddle-Signature header using Ruby String#==. An unauthenticated remote attacker who can repeatedly submit requests to /pay/webhooks/paddle_billing and obtain sufficiently precise timing measurements can infer matching digest prefixes and recover a valid signature. A forged accepted webhook is enqueued through Pay::Webhooks::ProcessJob and can cause a host application to update billing state, provision paid features, record refunds, or trigger customer notifications. This issue is fixed in version 11.6.2."
                }
            ],
            "source": {
                "advisory": "GHSA-mjgf-xj26-9qf9",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/pay-rails/pay/security/advisories/GHSA-mjgf-xj26-9qf9",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-14T18:57:23.905589Z",
                                "id": "CVE-2026-70658",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-14T18:57:30.947Z"
                }
            }
        ]
    }
}