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TI-2026-28900 Aliases CVE-2026-40069GHSA-9hfr-gw99-8rhx

bsv-sdk ARC broadcaster treats INVALID/MALFORMED/ORPHAN responses as successful broadcasts

Priority LOW 39CWE-754Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00276 20th percentileScored 2026-11-07
Fix Fixed bsv-ruby-sdk (sgbett): 0.8.2bsv-sdk (RubyGems): 0.8.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
sgbettbsv-ruby-sdk0.1.0 to before 0.8.20.8.2Patch availableCNA
—bsv-sdk (RubyGems)0.1.0 to before 0.8.20.8.2Patch availableGHSA-9hfr-gw99-8rhx
  • bsv-ruby-sdk Vendorsgbett Affected 0.1.0 to before 0.8.2 Fixed in 0.8.2 Patch available CNA
  • bsv-sdk (RubyGems) Vendor— Affected 0.1.0 to before 0.8.2 Fixed in 0.8.2 Patch available GHSA-9hfr-gw99-8rhx

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:sgbett:bsv_ruby_sdk:*:*:*:*:*:ruby:*:*0.1.0 to before 0.8.2Vulnerablesgbett
  • cpe:2.3:a:sgbett:bsv_ruby_sdk:*:*:*:*:*:ruby:*:* Versions 0.1.0 to before 0.8.2 Vulnerable ·sgbett

Remediation

  • Fix · CNA bsv-ruby-sdk (sgbett) Fixed in 0.8.2
  • Fix · GHSA-9hfr-gw99-8rhx bsv-sdk (RubyGems) Fixed in 0.8.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-40069
  2. 2026-10-03 Alias added: GHSA-9hfr-gw99-8rhx

References

Patch 2

Advisory 1

Other 5

  • TI-2026-28901 bsv-sdk and bsv-wallet persist unverified certifier signatures in acquire_certificate (direct and issuance paths) CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences