CVE-2026-40070
- Source
- https://cve.org/CVERecord?id=CVE-2026-40070
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40070.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-40070
- Aliases
- Published
- 2026-04-09T17:26:51.495Z
- Modified
- 2026-07-08T08:13:23.587021537Z
- Severity
-
- 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- bsv-sdk and bsv-wallet persist unverified certifier signatures in acquire_certificate (direct and issuance paths)
- Details
-
BSV Ruby SDK is the Ruby SDK for the BSV blockchain. From 0.3.1 to before 0.8.2, BSV::Wallet::WalletClient#acquirecertificate persists certificate records to storage without verifying the certifier's signature over the certificate contents. In acquisitionprotocol: 'direct', the caller supplies all certificate fields (including signature:) and the record is written to storage verbatim. In acquisitionprotocol: '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 listcertificates and prove_certificate.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40070.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-347" ] }- References
-
- https://brc.dev/52
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40070.json
- https://github.com/sgbett/bsv-ruby-sdk/security/advisories/GHSA-hc36-c89j-5f4j
- https://nvd.nist.gov/vuln/detail/CVE-2026-40070
- https://github.com/sgbett/bsv-ruby-sdk/issues/305
- https://github.com/sgbett/bsv-ruby-sdk/commit/4992e8a265fd914a7eeb0405c69d1ff0122a84cc
- https://github.com/sgbett/bsv-ruby-sdk/pull/306
Affected packages
Git / github.com/sgbett/bsv-ruby-sdk
Affected ranges
- Type
- GIT
- Repo
- https://github.com/sgbett/bsv-ruby-sdk
- Events
- Database specific
{ "source": [ "CPE_RANGE", "REFERENCES" ], "cpe": [ "cpe:2.3:a:sgbett:bsv-wallet:*:*:*:*:*:ruby:*:*", "cpe:2.3:a:sgbett:bsv_ruby_sdk:*:*:*:*:*:ruby:*:*" ], "extracted_events": [ { "introduced": "0.1.2" }, { "fixed": "0.3.4" }, { "introduced": "0.3.1" }, { "fixed": "0.8.2" } ] }