bs58-88
This report shows the evidence for bs58-88@6.0.1. 1 of 2 known versions is blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.
OpenSSF/OSV Malicious Advisory
imported 3mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-11023 confirms this npm version as malicious.
Advisory
MAL-2026-11023
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in bs58-88 (npm)
Details
Package `bs58-88` mimics the popular `bs58` base58 encoder: README, keywords, and repository URL match the real `bs58`, and `index.cjs` re-exports functionality via `require("base65-85x")`. The sole runtime dependency `base65-85x` is itself a name that resembles the legitimate `base-x` package. The package under review does not contain traced installer-harm behavior (no exfiltration, no install-time fetch-and-execute, no credential access, no lifecycle scripts observed), so the concern is name-confusion plus a look-alike transitive rather than a demonstrated payload in this artifact. Whether `base65-85x` is itself malicious was not established here; a human reviewer should assess both the name-similarity judgment against `bs58`/`base-x` and the trust of the `base65-85x` dependency before publishing a public advisory.
## Source: ghsa-malware (2e251130fcb84c2b20ede3b09d95f501bd3b593c051cf0f95d6beba9b11949a2) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
References
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 bs58-88@6.0.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing bs58-88@6.0.1. 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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