CVE-2026-40069

Name: CVE-2026-40069
Creator: NVD / NIST
Published: 2026-04-09T18:17:03.043+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.27%

Last modified Jun 17, 2026

CVE-2026-40069 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. BSV Ruby SDK is the Ruby SDK for the BSV blockchain. From 0.1.0 to before 0.8.2, BSV::Network::ARC's failure detection only recognises REJECTED and DOUBLE_SPEND_ATTEMPTED. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

Description

BSV Ruby SDK is the Ruby SDK for the BSV blockchain. From 0.1.0 to before 0.8.2, BSV::Network::ARC's failure detection only recognises REJECTED and DOUBLE_SPEND_ATTEMPTED. ARC responses with txStatus values of INVALID, MALFORMED, MINED_IN_STALE_BLOCK, or any ORPHAN-containing extraInfo / txStatus are silently treated as successful broadcasts. Applications that gate actions on broadcaster success are tricked into trusting transactions that were never accepted by the network. This vulnerability is fixed in 0.8.2.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.27%

17.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-754

Affected Software

Vendor	Product	Versions
Sgbett	Bsv Ruby Sdk	>= 0.1.0, < 0.8.2

References

https://github.com/sgbett/bsv-ruby-sdk/commit/4992e8a265fd914a7eeb0405c69d1ff0122a84ccPatch
https://github.com/sgbett/bsv-ruby-sdk/issues/305Issue Tracking
https://github.com/sgbett/bsv-ruby-sdk/pull/306Issue Tracking
https://github.com/sgbett/bsv-ruby-sdk/releases/tag/v0.8.2Release Notes
https://github.com/sgbett/bsv-ruby-sdk/security/advisories/GHSA-9hfr-gw99-8rhxPatch, Vendor Advisory

Timeline

Published: Apr 9, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-40069?

How severe is CVE-2026-40069?

CVE-2026-40069 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2026-40069?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-40069?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST