{"answers":{"affected":"1 open source package ship an affected version, including blue-string-formatter-utilss.","exploited":"There is no known exploitation of MAL-2026-16363 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-2026-16363 is a malicious package in blue-string-formatter-utilss, published on 21 Sep 2026."},"fix_prompt":"MAL-2026-16363 is a malicious package: blue-string-formatter-utilss (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-2026-16363/ (Markdown: https://insights.sbomify.com/MAL-2026-16363/index.md)","id":"MAL-2026-16363","markdown":"https://insights.sbomify.com/MAL-2026-16363/index.md","name":"MAL-2026-16363","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 advertises itself as string-formatting utilities but ships no formatter code. Its main entry `payload.js` is an IIFE that creates a `\u003cscript\u003e` element with `src='https://xss.report/c/k3rne111'` and appends it to `document.body`, causing an attacker-controlled remote script to be fetched and executed whenever the module is loaded in a DOM context. xss.report is a known XSS payload-delivery service. The name-versus-behavior mismatch (a 'string formatter' whose only behavior is a remote script loader) is a typosquat cover story rather than legitimate functionality.","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 blue-string-formatter-utilss (npm)","id":"MAL-2026-16363","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":"blue-string-formatter-utilss","purl":"pkg:npm/blue-string-formatter-utilss","source":"MAL-2026-16363"}],"products":null,"published":"2026-09-21","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-2026-16363/"}