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Malicious code in rollup-plugin-polyfill-handler (npm)

0
Critical
Published: 07/06/2026 (07/06/2026, 18:02:57 UTC)
Source: GCVE Database
Product: rollup-plugin-polyfill-handler

Description

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (8fcd05581537eece4993579cb664215a82b87dad2bdb03cae7ba998ba092a79d) Package name mimics the rollup-plugin-* ecosystem but exposes no Rollup plugin API. Its exported functions getPlugin, setPlugin, and getPluginExten each issue an HTTP GET to https://rest-icon-handler.store/icons/<token> and pass the response body through JSON.parse followed by eval, executing whatever the remote server returns inside the caller's Node.js process. The destination URL is assembled from split string fragments (protocol/separator/subdomain/domain/path plus numeric token variables) rather than a literal, a lightweight obfuscation to defeat URL scanners. getPlugin also chains into getPluginExten, causing a single call to trigger multiple remote-code fetches. Any consumer that imports this package and invokes an exported function grants the operator of rest-icon-handler.store full remote code execution on the installer's machine. Name and description present the package as a Rollup polyfill helper to lure developers into installing and invoking it. ## Source: ghsa-malware (eb53d850b987c8153dfa2ccba3634b4d653dbd66c8ed73198270232aa7562066) 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.

Affected software

npmghsa
rollup-plugin-polyfill-handler
Affected versions
=1.0.0

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 07/06/2026, 23:29:12 UTC

Technical Analysis

The rollup-plugin-polyfill-handler package at version 1.0.0 is identified as containing malicious code. Installation or execution of this package can lead to a full compromise of the host system. The malicious code may allow an attacker to gain complete control, potentially exfiltrating secrets and keys. Due to the severity of the compromise, simple removal of the package is insufficient to ensure system integrity.

Potential Impact

Full system compromise on any computer with the affected package installed or running. All secrets and keys stored on the compromised system are at risk and should be considered exposed. The attacker may have persistent access beyond the presence of the package itself.

Mitigation Recommendations

Remove the rollup-plugin-polyfill-handler package version 1.0.0 immediately. Rotate all secrets and keys from a separate, secure system. Conduct a thorough investigation and remediation of the affected system, as removal of the package alone does not guarantee elimination of all malicious artifacts or attacker access.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
MAL-2026-6826
Osv Schema Version
1.7.4
Aliases
["GHSA-h89m-q7rj-4hxm"]
Ecosystems
["npm"]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a4c345127e9c797195fd113

Added to database: 07/06/2026, 23:03:45 UTC

Last enriched: 07/06/2026, 23:29:12 UTC

Last updated: 07/28/2026, 06:11:29 UTC

Views: 112

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