html-to-gutenberg@4.2.26
OpenSSF/OSV Malicious Advisory
imported 4d ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-6359 confirms this npm version as malicious.
Independent LPM AI assessment
CleanIndependent AI assessment: clean. LPM AI assessed this version as clean; the assessments disagree.
The postinstall mutation is limited to replacing fetch-page-assets with a packaged implementation of the same package and version. The inspected runtime network behavior supports conversion and an explicitly enabled preview feature; no concrete attack behavior was established.
Independent scan evidence
public snapshot- The postinstall hook runs a local script to replace the installed asset extractor with a packaged copy.
- The replacement script copies the vendored file only when both source and target exist; the vendor identifies itself as fetch-page-assets 1.2.7.
- The manifest points to index.js. Preview requests require both an explicit preview option and a source URL, and send that source URL to the configured SnapAPI endpoint.
- The vendored extractor handles HTML assets as part of the package’s conversion function.
Source & flagged code
5 flagged · loading sourcePackage defines install-time lifecycle scripts.
package.jsonView on unpkgPackage declares a runtime dependency whose name matches a Node built-in module.
package.jsonView on unpkgThe postinstall hook runs a local script to replace the installed asset extractor with a packaged copy.
package.jsonView on unpkg · L50Findings
Affected versions and remediation
This report applies to html-to-gutenberg@4.2.26.
See all versions of html-to-gutenberg for other recorded verdicts.
- Avoid installing html-to-gutenberg@4.2.26. 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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