CVE-2026-44714— bitcoinj: ScriptExecution P2PKH/P2WPKH Verification Bypass
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-44714
Vulnerability Information
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Vulnerability Title
bitcoinj: ScriptExecution P2PKH/P2WPKH Verification Bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
The bitcoinj library is a Java implementation of the Bitcoin protocol. Prior to 0.17.1, ScriptExecution.correctlySpends() contains two fast-path verification bugs for standard P2PKH and native P2WPKH spends in core/src/main/java/org/bitcoinj/script/ScriptExecution.java. In both branches, bitcoinj verifies an attacker-controlled signature/public-key pair but fails to verify that the public key is the one committed to by the output being spent. As a result, any attacker keypair can satisfy bitcoinj's local verification for arbitrary P2PKH and P2WPKH outputs. This vulnerability is fixed in 0.17.1.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
密码学签名的验证不恰当
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-44714
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- https://github.com/bitcoinj/bitcoinj/security/advisories/GHSA-hfcf-v2f8-x9pcx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-44714
IV. Related Vulnerabilities
Same weakness: CWE-347
V. Comments for CVE-2026-44714
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