CVE-2026-40070
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.
- CVSS 3.1
- 8.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - EPSS
- 0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-26)
- CWE
- CWE-347
- Published
- Modified
- Record from
- the NVD, synced
Affected
- sgbett:bsv-wallet
- sgbett:bsv_ruby_sdk
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-hc36-c89j-5f4j | RubyGems | bsv-sdk | >=0.3.1 <0.8.2 | 0.8.2 |
| GHSA-hc36-c89j-5f4j | RubyGems | bsv-wallet | >=0.1.2 <0.3.4 | 0.3.4 |