{"answers":{"affected":"1 open source package ship an affected version, including rollup-packages-polyfill-core.","exploited":"There is no known exploitation of MAL-2026-10160 in the wild and no public exploit code.","fix":"Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.","what":"MAL-2026-10160 is a malicious package in rollup-packages-polyfill-core, published on 10 Jul 2026."},"fix_prompt":"MAL-2026-10160 is a malicious package: rollup-packages-polyfill-core (npm). Every version was published to cause harm.\n\nTask:\n1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.\n2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.\n3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.\n4. If the package is not used anywhere, say so and change nothing.\n\nReference: https://insights.sbomify.com/MAL-2026-10160/ (Markdown: https://insights.sbomify.com/MAL-2026-10160/index.md)","id":"MAL-2026-10160","markdown":"https://insights.sbomify.com/MAL-2026-10160/index.md","name":"MAL-2026-10160","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"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`, `require`s 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.\n\nAny 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.","ecosystems":["npm"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Malicious code in rollup-packages-polyfill-core (npm)","id":"MAL-2026-10160","indexable":true,"kev":null,"kind":"malicious","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":[],"package":"rollup-packages-polyfill-core","purl":"pkg:npm/rollup-packages-polyfill-core","source":"MAL-2026-10160"}],"products":null,"published":"2026-07-10","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"OpenSSF Malicious Packages","prefix":"MAL"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":null,"url":"https://insights.sbomify.com/MAL-2026-10160/"}