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CVE-2026-40069: bsv-sdk ARC broadcaster treats INVALID/MALFORMED/ORPHAN responses as successful broadcasts

April 9, 2026

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.

References

  • github.com/advisories/GHSA-9hfr-gw99-8rhx
  • github.com/sgbett/bsv-ruby-sdk
  • github.com/sgbett/bsv-ruby-sdk/commit/4992e8a265fd914a7eeb0405c69d1ff0122a84cc
  • github.com/sgbett/bsv-ruby-sdk/issues/305
  • github.com/sgbett/bsv-ruby-sdk/pull/306
  • github.com/sgbett/bsv-ruby-sdk/releases/tag/v0.8.2
  • github.com/sgbett/bsv-ruby-sdk/security/advisories/GHSA-9hfr-gw99-8rhx
  • nvd.nist.gov/vuln/detail/CVE-2026-40069

Code Behaviors & Features

Detect and mitigate CVE-2026-40069 with GitLab Dependency Scanning

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Affected versions

All versions starting from 0.1.0 before 0.8.2

Fixed versions

  • 0.8.2

Solution

Upgrade to version 0.8.2 or above.

Impact 7.5 HIGH

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

Learn more about CVSS

Weakness

  • CWE-754: Improper Check for Unusual or Exceptional Conditions

Source file

gem/bsv-sdk/CVE-2026-40069.yml

Spotted a mistake? Edit the file on GitLab.

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