CVE-2026-44714 Details
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.
A vulnerability in the bitcoinj library, affecting versions prior to 0.17.1, allows for a bypass in the verification process for standard P2PKH and native P2WPKH transactions. The issue arises in the 'correctlySpends()' method within 'ScriptExecution.java', where the library incorrectly validates an attacker-controlled signature and public key. It fails to ensure that the public key corresponds to the output being spent, enabling any key pair to pass verification for arbitrary P2PKH and P2WPKH outputs. This vulnerability does not impact the SPV trust model, which does not verify input signatures.
The vulnerability has been fixed in bitcoinj version 0.17.1, which is available on Maven Central. Users can update to this version to address the vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 15, 2026CISA-ADP
Assessed May 16, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/bitcoinj/bitcoinj/commit/2bc5653c41d260d840692bc554690d4d79208f9c | [email protected] | Source CodeVendor |
| https://github.com/bitcoinj/bitcoinj/commit/b575a682acf614b9ff95cacbdeb48f86c3ababe0 | [email protected] | Source CodeVendor |
| https://github.com/bitcoinj/bitcoinj/security/advisories/GHSA-hfcf-v2f8-x9pc | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-347 | Improper Verification of Cryptographic Signature | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| bitcoinj | All versions |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 15, 2026 | New CVE Received | [email protected] |