CVE-2026-40069

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 82% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
18.3%
KEV
Not listed

Published

April 9, 2026

Last Modified

April 30, 2026

Advisory Details (5)

Auto-updated May 6, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available

bsv-sdk ARC broadcaster treats INVALID/MALFORMED/ORPHAN responses as successful broadcasts · Advisory · sgbett/bsv-ruby-sdk · GitHub

https://github.com/sgbett/bsv-ruby-sdk/security/advisories/GHSA-9hfr-gw99-8rhx
generic

Release sdk-0.8.2 · sgbett/bsv-ruby-sdk · GitHub

https://github.com/sgbett/bsv-ruby-sdk/releases/tag/v0.8.2
generic

fix(security): A1 security hotfixes (bsv-sdk 0.8.2 + bsv-wallet 0.3.4) — closes #305 by sgbett · Pull Request #306 · sgbett/bsv-ruby-sdk · GitHub

https://github.com/sgbett/bsv-ruby-sdk/pull/306
generic

[HLR] A1 — Security hotfixes for bsv-sdk 0.8.2 + bsv-wallet 0.3.4 (post-compliance-review) · Issue #305 · sgbett/bsv-ruby-sdk · GitHub

https://github.com/sgbett/bsv-ruby-sdk/issues/305
generic🟡 PoC Available

Merge pull request #306 from sgbett/fix/305-security-hotfixes · sgbett/bsv-ruby-sdk@4992e8a · GitHub

https://github.com/sgbett/bsv-ruby-sdk/commit/4992e8a265fd914a7eeb0405c69d1ff0122a84cc

Affected Packages

(1 across 1 ecosystem)
RubyGems(1)
PackageVulnerable rangeFixed inDependents
bsv-sdk0.1.0 ... 0.8.1 (14 versions)0.8.2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 36× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 03:10 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:24 UTCEPSS rescore
  4. 2026-07-20 20:02 UTCOSV refresh
  5. 2026-07-20 17:08 UTCEPSS rescore
  6. 2026-07-19 14:31 UTCEPSS rescore
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  1. 2026-07-04 06:31 UTCEPSS rescore
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  3. 2026-06-30 23:22 UTCEPSS rescore
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  5. 2026-06-28 14:07 UTCEPSS rescore
  6. 2026-06-28 04:56 UTCEPSS rescore
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  8. 2026-06-25 13:49 UTCEPSS rescore
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  17. 2026-06-19 19:25 UTCEPSS rescore
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  22. 2026-06-15 17:49 UTCEPSS rescore
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  24. 2026-06-12 23:12 UTCEPSS rescore
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  27. 2026-06-10 22:18 UTCEPSS rescore
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  30. 2026-06-08 14:17 UTCEPSS rescore
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  35. 2026-06-06 13:47 UTCEPSS rescore
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  37. 2026-06-05 22:47 UTCEPSS rescore
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  39. 2026-06-05 06:10 UTCEPSS rescore
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  41. 2026-06-04 13:12 UTCEPSS rescore
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  43. 2026-06-02 20:13 UTCEPSS rescore
  44. 2026-06-01 13:52 UTCEPSS rescore
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  47. 2026-05-31 22:30 UTCEPSS rescore
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  52. 2026-05-29 13:44 UTCEPSS rescore
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  54. 2026-05-28 13:44 UTCEPSS rescore
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  63. 2026-05-20 22:38 UTCEPSS rescore
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  65. 2026-05-20 18:04 UTCEG score recompute
  66. 2026-05-20 11:22 UTCEPSS rescore
  67. 2026-05-20 11:22 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-40069?
CVE-2026-40069 is a high vulnerability published on April 9, 2026. 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 DOUBLESPENDATTEMPTED. ARC responses with txStatus values of INVALID, MALFORMED, MINEDINSTALE_BLOCK, or any ORPHAN-containing extraInfo / txStatus are…
When was CVE-2026-40069 disclosed?
CVE-2026-40069 was first published in the National Vulnerability Database on April 9, 2026, with the most recent update on April 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40069 actively exploited?
CVE-2026-40069 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-40069?
CVE-2026-40069 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-40069?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40069, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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