CVE-2026-40070
8.1 · HIGHOverview
CVE-2026-40070 is a high-severity vulnerability affecting sgbett bsv-wallet. It was published on April 9, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from sgbett. Update bsv-wallet to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| sgbett | bsv-wallet | >= 0.1.2, < 0.3.4 | Affected |
| sgbett | bsv_ruby_sdk | >= 0.3.1, < 0.8.2 | Affected |
References
Frequently Asked Questions
What is CVE-2026-40070?
CVE-2026-40070 is a high-severity vulnerability affecting sgbett bsv-wallet. It was published on April 9, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2026-40070?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-40070?
Check the references section for vendor advisories and patches from sgbett. Update bsv-wallet to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-40070?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-40070 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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