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CVE-2026-40070

bsv-sdk and bsv-wallet persist unverified certifier signatures in acquire_certificate (direct and issuance paths) PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
sgbett / bsv-ruby-sdkaffected >= 0.3.1, < 0.8.2
sgbett / bsv-sdkaffected >= 0.3.1, < 0.8.2
sgbett / bsv-walletaffected >= 0.1.2, < 0.3.4

CWE

CWE-347

References

ADP enrichment

CISA-ADP

No English description supplied.