bitcoinj: ScriptExecution P2PKH/P2WPKH Verification Bypass_CVE-2026-44714

7.5 / 10

HIGH

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

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.

Basic Information

ID CVE-2026-44714

Source GitHub_M

Published May 15, 2026 at 16:51

Affected Product

Vendor bitcoinj

Product bitcoinj

Version < 0.17.1

Affected Versions bitcoinj bitcoinj < 0.17.1

CWE Classification

CWE-347

References

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    "published": "2026-05-15T16:51:11.865Z",
    "modified": "2026-05-15T16:51:11.865Z",
    "type": "cve",
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    "references": "https://github.com/bitcoinj/bitcoinj/security/advisories/GHSA-hfcf-v2f8-x9pc\nhttps://github.com/bitcoinj/bitcoinj/commit/2bc5653c41d260d840692bc554690d4d79208f9c\nhttps://github.com/bitcoinj/bitcoinj/commit/b575a682acf614b9ff95cacbdeb48f86c3ababe0",
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