{"answers":{"affected":"1 open source package ship an affected version, including css-relative-color-util.","exploited":"There is no known exploitation of MAL-2026-17484 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-2026-17484 is a malicious package in css-relative-color-util, published on 4 Oct 2026."},"fix_prompt":"MAL-2026-17484 is a malicious package: css-relative-color-util (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-2026-17484/ (Markdown: https://insights.sbomify.com/MAL-2026-17484/index.md)","id":"MAL-2026-17484","markdown":"https://insights.sbomify.com/MAL-2026-17484/index.md","name":"MAL-2026-17484","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The package name advertises a CSS utility, but thunderboltRegistry.js runs an IIFE on module load that uses child_process.execSync to execute whoami, uname -a, cat /etc/hosts, and ifconfig/ip addr, then exfiltrates the output together with os.hostname and the Node version to a hardcoded webhook at https://dxpoc.gt.tc/callback.php/ via fetch and to an *.oast.live DNS collector via dns.resolve. The loader deletes any require.cache entry containing 'thunderboltRegistry' so the IIFE re-fires on subsequent requires, and falls back to node:child_process and new module.constructor().require('child_process') to obtain the exec primitive. The package also exports stubs named thunderboltRegistry, siteAssetsRegistry, documentManagementRegistry, editorRegistry, corvidRegistry and similar, matching internal Wix thunderbolt module names, with a registry-manifest.min.json pointing at static.parastorage.com unpkg paths — a dependency-confusion shape targeting an internal namespace. The declared CSS-utility purpose is unrelated to any of this behavior.","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 css-relative-color-util (npm)","id":"MAL-2026-17484","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":[],"last_affected":[],"package":"css-relative-color-util","purl":"pkg:npm/css-relative-color-util","source":"MAL-2026-17484"}],"products":null,"published":"2026-10-04","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-2026-17484/"}