{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40070", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-09T00:39:12.204Z", "datePublished": "2026-04-09T17:26:51.495Z", "dateUpdated": "2026-04-09T17:26:51.495Z"}, "containers": {"cna": {"title": "bsv-sdk and bsv-wallet persist unverified certifier signatures in acquire_certificate (direct and issuance paths)", "problemTypes": [{"descriptions": [{"cweId": "CWE-347", "lang": "en", "description": "CWE-347: Improper Verification of Cryptographic Signature", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/sgbett/bsv-ruby-sdk/security/advisories/GHSA-hc36-c89j-5f4j", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/sgbett/bsv-ruby-sdk/security/advisories/GHSA-hc36-c89j-5f4j"}, {"name": "https://github.com/sgbett/bsv-ruby-sdk/issues/305", "tags": ["x_refsource_MISC"], "url": "https://github.com/sgbett/bsv-ruby-sdk/issues/305"}, {"name": "https://github.com/sgbett/bsv-ruby-sdk/pull/306", "tags": ["x_refsource_MISC"], "url": "https://github.com/sgbett/bsv-ruby-sdk/pull/306"}, {"name": "https://github.com/sgbett/bsv-ruby-sdk/commit/4992e8a265fd914a7eeb0405c69d1ff0122a84cc", "tags": ["x_refsource_MISC"], "url": "https://github.com/sgbett/bsv-ruby-sdk/commit/4992e8a265fd914a7eeb0405c69d1ff0122a84cc"}, {"name": "https://brc.dev/52", "tags": ["x_refsource_MISC"], "url": "https://brc.dev/52"}], "affected": [{"vendor": "sgbett", "product": "bsv-ruby-sdk", "versions": [{"version": ">= 0.3.1, < 0.8.2", "status": "affected"}]}, {"vendor": "sgbett", "product": "bsv-sdk", "versions": [{"version": ">= 0.3.1, < 0.8.2", "status": "affected"}]}, {"vendor": "sgbett", "product": "bsv-wallet", "versions": [{"version": ">= 0.1.2, < 0.3.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-09T17:26:51.495Z"}, "descriptions": [{"lang": "en", "value": "BSV Ruby SDK is the Ruby SDK for the BSV blockchain. From 0.3.1 to before 0.8.2, BSV::Wallet::WalletClient#acquire_certificate persists certificate records to storage without verifying the certifier's signature over the certificate contents. In acquisition_protocol: 'direct', the caller supplies all certificate fields (including signature:) and the record is written to storage verbatim. In acquisition_protocol: 'issuance', the client POSTs to a certifier URL and writes whatever signature the response body contains, also without verification. An attacker who can reach either API (or who controls a certifier endpoint targeted by the issuance path) can forge identity certificates that subsequently appear authentic to list_certificates and prove_certificate."}], "source": {"advisory": "GHSA-hc36-c89j-5f4j", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "BSV Ruby SDK is the Ruby SDK for the BSV blockchain. From 0.3.1 to before 0.8.2, BSV::Wallet::WalletClient#acquire_certificate persists certificate records to storage without verifying the certifier's signature over the certificate contents. In acquisition_protocol: 'direct', the caller supplies all certificate fields (including signature:) and the record is written to storage verbatim. In acquisition_protocol: 'issuance', the client POSTs to a certifier URL and writes whatever signature the response body contains, also without verification. An attacker who can reach either API (or who controls a certifier endpoint targeted by the issuance path) can forge identity certificates that subsequently appear authentic to list_certificates and prove_certificate."}], "id": "CVE-2026-40070", "lastModified": "2026-04-09T18:17:03.203", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-09T18:17:03.203", "references": [{"source": "security-advisories@github.com", "url": "https://brc.dev/52"}, {"source": "security-advisories@github.com", "url": "https://github.com/sgbett/bsv-ruby-sdk/commit/4992e8a265fd914a7eeb0405c69d1ff0122a84cc"}, {"source": "security-advisories@github.com", "url": "https://github.com/sgbett/bsv-ruby-sdk/issues/305"}, {"source": "security-advisories@github.com", "url": "https://github.com/sgbett/bsv-ruby-sdk/pull/306"}, {"source": "security-advisories@github.com", "url": "https://github.com/sgbett/bsv-ruby-sdk/security/advisories/GHSA-hc36-c89j-5f4j"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}