CVE-2026-44714
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.bitcoinj:bitcoinj-coreMaven | >= 0.15, < 0.17.1 | 0.17.1 |
Affected products
1Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-hfcf-v2f8-x9pcghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-44714ghsaADVISORY
- github.com/bitcoinj/bitcoinj/commit/2bc5653c41d260d840692bc554690d4d79208f9cnvdWEB
- github.com/bitcoinj/bitcoinj/commit/b575a682acf614b9ff95cacbdeb48f86c3ababe0nvdWEB
- github.com/bitcoinj/bitcoinj/releases/tag/v0.17.1ghsaWEB
- github.com/bitcoinj/bitcoinj/security/advisories/GHSA-hfcf-v2f8-x9pcnvdWEB
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