python-bitcoinlib
This report shows the evidence for python-bitcoinlib@1.0.3. 4 of 4 known versions are blocked or flagged. See all versions.
OpenSSF/OSV Malicious Advisory
imported 3mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-12113 confirms this npm version as malicious.
Advisory
MAL-2026-12113
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in python-bitcoinlib (npm)
Details
This npm package, published under the well-known PyPI name `python-bitcoinlib`, ships a `postinstall.js` lifecycle script that runs automatically on `npm install`. The script reads classic installer secret paths including `~/.ssh/id_rsa`, `~/.aws/credentials`, `~/.npmrc`, `.env` files, and Solana/Ethereum wallet keystores (`~/.config/solana/id.json`), and additionally walks dotdirs under $HOME for files whose names match wallet/key/secret/seed/mnemonic/keystore/private patterns. The collected file contents, together with `os.hostname()` and `os.userInfo()`, are POSTed via `https.request` to a hardcoded webhook.site collector at `https://webhook.site/5c5ad6cb-62df-4ea5-9dfb-2c447920ddc4`. The package name collides with the established PyPI `python-bitcoinlib` project but ships unrelated code on npm, indicating deliberate ecosystem-confusion typosquatting rather than a legitimate port.
Source & flagged code
0 flagged · loading sourceNo flagged code excerpts are attached to this scan.
Findings
1 High
HighOsv Malicious Advisory
Affected versions and remediation
This report applies to python-bitcoinlib@1.0.3.
The same advisory and Firewall decision cover 4 recorded versions
1.0.0, 1.0.1, 1.0.2, 1.0.3
The versions list below shows the verdict for each recorded version.
- Avoid installing python-bitcoinlib@1.0.3. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.
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