mnemonic-utils
This report shows the evidence for mnemonic-utils@1.0.2. 3 of 3 known versions are blocked or flagged. See all versions.
OpenSSF/OSV Malicious Advisory
imported 3mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-12112 confirms this npm version as malicious.
Advisory
MAL-2026-12112
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in mnemonic-utils (npm)
Details
index.js executes an IIFE at require-time that reads installer-owned secret files (.env,.npmrc, ~/.aws/credentials, ~/.ssh/id_rsa, id_ed25519, id_ecdsa, Solana id.json, Ethereum keystore) and recursively scans home dotdirectories for files matching /wallet|key|secret|seed|mnemonic|keystore|private/. The harvested contents are combined with os.hostname() and os.userInfo().username into a single JSON body and POSTed over HTTPS to a hardcoded webhook.site URL (path /5c5ad6cb-62df-4ea5-9dfb-2c447920ddc4). The payload is gated by a Date.UTC(2026,7,6) activation check, with in-source comments describing the delay as evasion of npm sandbox detection windows. The package name suggests a mnemonic utility, but the shipped code performs no such function — its only behavior is credential and wallet-secret exfiltration.
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 mnemonic-utils@1.0.2.
The same advisory and Firewall decision cover 3 recorded versions
1.0.0, 1.0.1, 1.0.2
The versions list below shows the verdict for each recorded version.
- Avoid installing mnemonic-utils@1.0.2. 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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