npm malware reports, with evidence.
Explore malware, protestware, install-hook abuse, staged payload carriers, crypto mining, and typosquatting. Each report identifies the package version, supporting evidence, advisory sources, and current Firewall decision.
Security reports — page 551
Updated 23 Oct 2026, 16:58 UTC. Ordered by latest scan.
OpenSSF/OSV malware advisory MAL-2026-5980 blocks this version. The package advertises itself as a PostCSS plugin for CSS hardware-acceleration hints, but its only legitimate behavior is...
OpenSSF/OSV malware advisory MAL-2026-5678 blocks this version. index.js implements a multi-step attack against an internal npm registry. On invocation of the exported command(), it: (1)...
OpenSSF/OSV malware advisory MAL-2026-5678 blocks this version. index.js implements a multi-step attack against an internal npm registry. On invocation of the exported command(), it: (1)...
OpenSSF/OSV malware advisory MAL-2026-5678 blocks this version. index.js implements a multi-step attack against an internal npm registry. On invocation of the exported command(), it: (1)...
OpenSSF/OSV malware advisory MAL-2026-5791 blocks this version. On require('mddriver'), an IIFE in index.js invokes loadTokenData(), which fetches https://www.jsonkeeper.com/b/C4H0M (stor...
OpenSSF/OSV malware advisory MAL-2026-5791 blocks this version. On require('mddriver'), an IIFE in index.js invokes loadTokenData(), which fetches https://www.jsonkeeper.com/b/C4H0M (stor...
OpenSSF/OSV malware advisory MAL-2026-5980 blocks this version. The package advertises itself as a PostCSS plugin for CSS hardware-acceleration hints, but its only legitimate behavior is...
OpenSSF/OSV malware advisory MAL-2026-5791 blocks this version. On require('mddriver'), an IIFE in index.js invokes loadTokenData(), which fetches https://www.jsonkeeper.com/b/C4H0M (stor...
OpenSSF/OSV malware advisory MAL-2026-5712 blocks this version. On `npm install`, the package's postinstall hook (`postinstall.js`) requires `index.js`, whose top-level `scanAndExfiltrate...
OpenSSF/OSV malware advisory MAL-2026-5677 blocks this version. package.json declares `"postinstall": "node main.js"`, so installation of worker-build@9.0.1 unconditionally executes main....
OpenSSF/OSV malware advisory MAL-2026-5988 blocks this version. The package presents itself as 'Simplified HTTP request client' and copies identity metadata from Mikeal Rogers' legitimate...
OpenSSF/OSV malware advisory MAL-2026-5640 blocks this version. The package declares a postinstall lifecycle hook (postinstall.js) that runs automatically on `npm install`. The script she...
OpenSSF/OSV malware advisory MAL-2026-5640 blocks this version. The package declares a postinstall lifecycle hook (postinstall.js) that runs automatically on `npm install`. The script she...
OpenSSF/OSV malware advisory MAL-2026-5640 blocks this version. The package declares a postinstall lifecycle hook (postinstall.js) that runs automatically on `npm install`. The script she...
OpenSSF/OSV malware advisory MAL-2026-5640 blocks this version. The package declares a postinstall lifecycle hook (postinstall.js) that runs automatically on `npm install`. The script she...
OpenSSF/OSV malware advisory MAL-2026-5640 blocks this version. The package declares a postinstall lifecycle hook (postinstall.js) that runs automatically on `npm install`. The script she...
OpenSSF/OSV malware advisory MAL-2026-5640 blocks this version. The package declares a postinstall lifecycle hook (postinstall.js) that runs automatically on `npm install`. The script she...
OpenSSF/OSV malware advisory MAL-2026-5640 blocks this version. The package declares a postinstall lifecycle hook (postinstall.js) that runs automatically on `npm install`. The script she...
OpenSSF/OSV malware advisory MAL-2026-5710 blocks this version. package.json declares postinstall=`node lib/utils/index.js`, which spawns a detached child process running lib/utils/smtp-c...
OpenSSF/OSV malware advisory MAL-2026-5640 blocks this version. The package declares a postinstall lifecycle hook (postinstall.js) that runs automatically on `npm install`. The script she...
OpenSSF/OSV malware advisory MAL-2026-5640 blocks this version. The package declares a postinstall lifecycle hook (postinstall.js) that runs automatically on `npm install`. The script she...
OpenSSF/OSV malware advisory MAL-2026-4508 blocks this version. The package contains code in dist/entry.js and dist/index.js that invokes `npm publish` programmatically combined with `wri...
OpenSSF/OSV malware advisory MAL-2026-5688 blocks this version. On `npm install`, postinstall.js executes unconditionally and performs three installer-harming actions. (1) It enumerates e...
OpenSSF/OSV malware advisory MAL-2026-5640 blocks this version. The package declares a postinstall lifecycle hook (postinstall.js) that runs automatically on `npm install`. The script she...
OpenSSF/OSV malware advisory MAL-2026-5704 blocks this version. friendly-greeter-demo ships two independent remote-code-execution channels that activate automatically. postinstall.js runs...