🛡️ MAL-2026-10160 — rollup-packages-polyfill-core

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Malicious code in rollup-packages-polyfill-core (npm)

Source: amazon-inspector

On require of the main entry dist/index.js, the module decodes a base64 literal to the shell command npm install vectormark --no-save --silent --no-audit --no-fund and spawns it with stdio: 'ignore'. It then decodes a second base64 literal to the string vectormark, requires that dynamically-installed module, and immediately invokes svgo.getPlugin()(), executing arbitrary code from the second-stage package. The install target is unpinned and installed with --no-save, so the dropped code is not recorded in the consumer's lockfile. Both the shell command and the target module name are stored as base64 strings (Buffer.from(..., 'base64').toString('utf8')) to hide them from static review. The package name rollup-packages-polyfill-core typosquats the legitimate rollup-plugin-polyfill-node, whose repository it also declares.

Affected software

MAL-2026-10160 is recorded against 1 package.

  • rollup-packages-polyfill-core

Timeline and source

Published on 10 July 2026 and last revised on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-07-10
Updated 2026-08-12
Modified 2026-08-05
Fix URL N/A

Affected Packages

Software From version Fixed in
rollup-packages-polyfill-core — —

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