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

Quick assessment

Affected
sgbett bsv-ruby-sdk
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

BSV Ruby SDK是Simon Bettison个人开发者的一个BSV区块链的Ruby开发工具包。 BSV Ruby SDK 0.1.0至0.8.2之前版本存在代码问题漏洞，该漏洞源于失败检测逻辑不完整，可能导致应用程序信任网络从未接受的交易。

CVSS 7.5 · High EPSS 0.47% · P39

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-40069

Vulnerability Information
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Vulnerability Title
bsv-sdk ARC broadcaster treats INVALID/MALFORMED/ORPHAN responses as successful broadcasts
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5
Vulnerability Title
BSV Ruby SDK 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
BSV Ruby SDK是Simon Bettison个人开发者的一个BSV区块链的Ruby开发工具包。 BSV Ruby SDK 0.1.0至0.8.2之前版本存在代码问题漏洞，该漏洞源于失败检测逻辑不完整，可能导致应用程序信任网络从未接受的交易。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
sgbett bsv-ruby-sdk >= 0.1.0, < 0.8.2 -

II. Public POCs for CVE-2026-40069

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8887 chars
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III. Intelligence Information for CVE-2026-40069

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Patches & Fixes for CVE-2026-40069 (1)

Other References for CVE-2026-40069 (2)

IV. Related Vulnerabilities

Same product: bsv-ruby-sdk
Same vendor: sgbett
Same weakness: CWE-754

V. Comments for CVE-2026-40069

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