CVE-2026-44714 json
bitcoinj: ScriptExecution P2PKH/P2WPKH Verification Bypass
published 6mo ago modified 4mo ago also GHSA-hfcf-v2f8-x9pc , EUVD-2026-30571
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 19%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven org.bitcoinj:bitcoinj-core 0.17.1
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 5mo ago
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.bitcoinj:bitcoinj-core | >=0.15, <0.17.1 |
0.17.1 |
Affected products
- bitcoinj bitcoinj
Classification
- Weakness
-
- CWE-347 Improper Verification of Cryptographic Signature
References
-
github.com
/bitcoinj/bitcoinj/commit/2bc5653c41d260d840692bc554690d4d79208f9c
web
-
github.com
/bitcoinj/bitcoinj/commit/b575a682acf614b9ff95cacbdeb48f86c3ababe0
web
-
github.com
/bitcoinj/bitcoinj/security/advisories/GHSA-hfcf-v2f8-x9pc
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-44714
advisory
-
github.com
/bitcoinj/bitcoinj
package
-
github.com
/bitcoinj/bitcoinj/releases/tag/v0.17.1
web
Sources
- CVE List CVE-2026-44714
- GitHub Advisory GHSA-hfcf-v2f8-x9pc
- NVD CVE-2026-44714
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