CVE-2026-40069

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

HIGH
7.5
CVSS Score
Published: April 9, 2026 at 05:22 PM UTC
Updated: October 26, 2026 at 12:10 AM UTC
1 product affected across 1 vendorBSV Ruby SDK

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Severity
HIGH7.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.1.0 ≤ v < 0.8.2
Affected range stops below 0.8.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

x_refsource_CONFIRMPatchVendor Advisory
Source: cverecord
https://github.com/sgbett/bsv-ruby-sdk/security/advisories/GHSA-9hfr-gw99-8rhx
x_refsource_MISCIssue Tracking
Source: cverecord
https://github.com/sgbett/bsv-ruby-sdk/issues/305
x_refsource_MISCIssue Tracking
Source: cverecord
https://github.com/sgbett/bsv-ruby-sdk/pull/306
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/sgbett/bsv-ruby-sdk/releases/tag/v0.8.2

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-754

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