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CVE-2025-69287

19
FAUCET Score

CVE-2025-69287 describes a cryptographic vulnerability in the BSV Blockchain TypeScript SDK prior to version 2.0.0, specifically impacting its BRC-104 authentication implementation. Incorrect signature data preparation led to incompatible signatures between SDK implementations, potentially allowing authentication bypass. Rated Medium (CVSS 5.4), this network-based vulnerability requires no privileges and low attack complexity, but user interaction is required. Its impact is low on integrity and availability, with no confidentiality impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Bsv-BlockchainTs-Sdk
< 2.0.0CNA affected

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
20.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 21st percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: @bsv/sdkFixed in: 2.0.0

Vendor Advisories (1)

npmGHSA-vjpq-xx5g-qvmmmedium

BSV Blockchain SDK has an Authentication Signature Data Preparation Vulnerability

Feb 17, 2026

References

github.com / bsv-blockchain/ts-sdk/commit/d8cf6930028372079d977138ae9eaa03ae2f50bb
github.com / bsv-blockchain/ts-sdk/security/advisories/GHSA-vjpq-xx5g-qvmm