edu-npm-postinstall-demo2
This report shows the evidence for edu-npm-postinstall-demo2@1.0.3. 4 of 4 known versions are blocked or flagged. See all versions.
OpenSSF/OSV Malicious Advisory
imported 4mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-5624 confirms this npm version as malicious.
Advisory
MAL-2026-5624
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in edu-npm-postinstall-demo2 (npm)
Details
On `npm install`, postinstall.js reads the installer's `.env` file from INIT_CWD, harvests environment variable values (DEMO_-prefixed), collects host identifiers via os.hostname() and os.platform(), and POSTs the combined payload to a hardcoded ngrok tunnel at https://scary-blooper-brewery.ngrok-free.dev/collect. The package describes itself as an educational demo, but the destination is an anonymous, author-mutable tunneling host with no publisher relationship — the canonical install-time exfiltration shape. Additionally, package.json declares a `build` script pointing at scripts/mine_cyrpto.js (misspelled 'crypto'); the file is currently empty and not auto-invoked, but its presence in the tarball is a quality/intent signal alongside the exfil. Installer harm is concrete and automatic on default install: filesystem read of installer secrets + host fingerprinting + outbound transmission to an attacker-style endpoint.
## Source: ghsa-malware (1feddccab6d673fe747f5491b088e5a1d514da6020b84fdf7c5709783fbd24bc) 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.
## Source: ossf-package-analysis (fb14831b7d92cfc67e25e029a80fd7a2fb855e68863a0f08f71e8d5fe41fe7ea) The OpenSSF Package Analysis project identified 'edu-npm-postinstall-demo2' @ 1.0.3 (npm) as malicious.
It is considered malicious because:
- The package communicates with a domain associated with malicious activity.
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 edu-npm-postinstall-demo2@1.0.3.
The same advisory and Firewall decision cover 4 recorded versions
1.0.1, 1.0.2, 1.0.3, 1.0.0
The versions list below shows the verdict for each recorded version.
- Avoid installing edu-npm-postinstall-demo2@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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