Improper Check for Unusual or Exceptional Conditions Affecting bsv-sdk package, versions <0.8.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RUBY-BSVSDK-16068908
- published15 Apr 2026
- disclosed9 Apr 2026
- creditUnknown
Introduced: 9 Apr 2026
NewCVE-2026-40069 (opens in a new tab)How to fix?
Upgrade bsv-sdk to version 0.8.2 or higher.
Overview
bsv-sdk is an A Ruby library for interacting with the BSV Blockchain — keys, scripts, transactions, and more.
Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions due to improper handling of ARC broadcaster responses i. An attacker can cause applications to trust transactions that were not accepted by the network by submitting transactions that result in INVALID, MALFORMED, MINED_IN_STALE_BLOCK, or ORPHAN-related statuses, which are incorrectly treated as successful broadcasts.
Workaround
This vulnerability can be mitigated by verifying broadcast results out-of-band (e.g., querying a block explorer or WhatsOnChain) before treating a transaction as broadcast, and by not gating integrity-critical actions solely on the ARC broadcaster's success response.