@offa-uwk/offa-uwk
This report shows the evidence for @offa-uwk/offa-uwk@999.0.6, the only known version.
This package appears in our research on the dependency confusion probes at version 99 and above, with how it works, the full package list and what to do if you installed it.
OpenSSF/OSV Malicious Advisory
imported 3mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-12327 confirms this npm version as malicious.
Advisory
MAL-2026-12327
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @offa-uwk/offa-uwk (npm)
Details
On `npm install`, the package's postinstall script (`node index.js`) collects host identifiers (`os.hostname()`, `os.userInfo().username`, `process.cwd()`) and POSTs them via HTTPS to a hardcoded webhook.site collector at `https://webhook.site/e6b10849-38dc-4280-a8e3-72ab39cfaf65`. Immediately after the beacon, the script executes `shutdown -h now` with a fallback of `systemctl poweroff`, forcibly powering off the installing host. A preinstall step also writes a marker file to the absolute path `/home/OFFA/flag`, outside the package directory. Package metadata (name `@offa-uwk/offa-uwk`, version `999.0.6`) is consistent with a proof-of-concept malicious artifact.
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 @offa-uwk/offa-uwk@999.0.6.
The versions list below shows the verdict for each recorded version.
- Avoid installing @offa-uwk/offa-uwk@999.0.6. 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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