Is CVE-2026-40070 actively exploited?

No active exploitation of CVE-2026-40070 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-40070 be exploited remotely?

Yes. CVE-2026-40070 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-40070?

CVE-2026-40070 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2026-40070

HIGH

CVE-2026-40070

CWE-347Published: April 9, 2026· Updated: Apr 13, 2026

8.1

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.0th

Official 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.

NVD Source

Technical Analysis

CVE-2026-40070 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 8.1.