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Vulnerabilities

Vulnerability · CVE-2025-69287

The BSV Blockchain SDK is a unified TypeScript SDK for developing scalable apps on the BSV Blockchain.

Published Feb 18, 2026 · catalog updated Feb 18, 2026 · The BSV Blockchain SDK

Last checked Nov 12, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-69287. EPSS is 0.34%. Act only if a listed version of The BSV Blockchain SDK is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The BSV Blockchain SDK).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.34%
Remediation
Version ranges on file
Affected products
vendor bsv-blockchain ts-sdk < 2.0.0

The BSV Blockchain SDK is a unified TypeScript SDK for developing scalable apps on the BSV Blockchain. Prior to version 2.0.0, a cryptographic vulnerability in the TypeScript SDK's BRC-104 authentication implementation caused incorrect signature data preparation, resulting in signature incompatibility between SDK implementations and potential authentication bypass scenarios. The vulnerability was located in the file of the TypeScript SDK, specifically in the and methods where signature data is prepared for BRC-104 mutual authentication. The TypeScript SDK incorrectly prepared signature data by

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor bsv-blockchain ts-sdk < 2.0.0< 2.0.0

How to fix CVE-2025-69287

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-69287. EPSS is 0.34%. Act only if a listed version of The BSV Blockchain SDK is installed.

Which versions are affected?

Compare what you have installed with bsv-blockchain ts-sdk < 2.0.0 < 2.0.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.34%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 18, 2026 · EUVD

    Detected

    The BSV Blockchain SDK is a unified TypeScript SDK for developing scalable apps on the BSV Blockchain. Prior to version 2.0.0, a cryptographic vulnerability in the TypeScript SDK's BRC-104 authentication implementation caused incorrect signature data preparation, resulting in signature incompatibility between SDK implementations and potential authentication bypass scenarios. The vulnerability was

  2. Feb 18, 2026 · EUVD

    Updated

    The BSV Blockchain SDK is a unified TypeScript SDK for developing scalable apps on the BSV Blockchain. Prior to version 2.0.0, a cryptographic vulnerability in the TypeScript SDK's BRC-104 authentication implementation caused incorrect signature data preparation, resulting in signature incompatibility between SDK implementations and potential authentication bypass scenarios. The vulnerability was

Sources

  • CVE.orgVulnerability recordCVE-2025-69287

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-69287

    30-day exploitation probability 0.34%

    first.org
  • EUVDVulnerability recordEUVD-2025-207789

    The BSV Blockchain SDK is a unified TypeScript SDK for developing scalable apps on the BSV Blockchain. Prior to version 2.0.0, a cryptographic vulnerability in the TypeScript SDK's BRC-104 authentication implementation caused incorrect signature data preparation, resulting in sig

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 12, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 9, 2026
  • CVE.orgNov 9, 2026
  • EUVDNov 9, 2026