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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
bitcoinj bitcoinj affected
Version Status Constraints
< 0.17.1 affected —

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Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-hfcf-v2f8-x9pc bitcoinj has a ScriptExecution P2PKH/P2WPKH Verification Bypass
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/bitcoinj/bitcoinj/commit/2bc5653c41d260d840692bc554690d4d79208f9c cve-icon cve-icon
https://github.com/bitcoinj/bitcoinj/commit/b575a682acf614b9ff95cacbdeb48f86c3ababe0 cve-icon cve-icon
https://github.com/bitcoinj/bitcoinj/security/advisories/GHSA-hfcf-v2f8-x9pc cve-icon cve-icon
History

Fri, 15 May 2026 17:15:00 +0000

Type Values Removed Values Added
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.
Title bitcoinj: ScriptExecution P2PKH/P2WPKH Verification Bypass
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-15T16:51:11.865Z

Reserved: 2026-05-07T17:07:09.318Z

Link: CVE-2026-44714

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-15T17:16:47.933

Modified: 2026-05-15T17:16:47.933

Link: CVE-2026-44714

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-15T18:30:05Z

Weaknesses