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CVE-2026-44714— bitcoinj: ScriptExecution P2PKH/P2WPKH Verification Bypass

Quick assessment

Affected
bitcoinj bitcoinj
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

bitcoinj是bitcoinj开源的一个Java实现的比特币协议库，支持钱包管理和交易收发。 bitcoinj 0.17.1之前版本存在数据伪造问题漏洞，该漏洞源于ScriptExecution.correctlySpends()中P2PKH和P2WPKH的快速路径验证存在缺陷，未验证公钥是否与输出承诺一致，可能导致攻击者使用任意密钥对绕过本地验证。

CVSS 7.5 · High EPSS 0.35% · P27

Possible ATT&CK Techniques 1 AI

T1553.005 · Mark-of-the-Web Bypass

Affected Version Matrix 1

VendorProduct Version RangeStatus
bitcoinj bitcoinj < 0.17.1 affected
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
bitcoinj 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
bitcoinj是bitcoinj开源的一个Java实现的比特币协议库，支持钱包管理和交易收发。 bitcoinj 0.17.1之前版本存在数据伪造问题漏洞，该漏洞源于ScriptExecution.correctlySpends()中P2PKH和P2WPKH的快速路径验证存在缺陷，未验证公钥是否与输出承诺一致，可能导致攻击者使用任意密钥对绕过本地验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
bitcoinj bitcoinj < 0.17.1 -

II. Public POCs for CVE-2026-44714

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III. Intelligence Information for CVE-2026-44714

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Patches & Fixes for CVE-2026-44714 (2)

Vendor Advisories for CVE-2026-44714 (1)

IV. Related Vulnerabilities

Same weakness: CWE-347

V. Comments for CVE-2026-44714

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