{"answers":{"affected":"1 open source package ship an affected version, including guest-app-ui.","exploited":"There is no known exploitation of MAL-2026-10096 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-2026-10096 is a malicious package in guest-app-ui, published on 9 Jul 2026."},"fix_prompt":"MAL-2026-10096 is a malicious package: guest-app-ui (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-2026-10096/ (Markdown: https://insights.sbomify.com/MAL-2026-10096/index.md)","id":"MAL-2026-10096","markdown":"https://insights.sbomify.com/MAL-2026-10096/index.md","name":"MAL-2026-10096","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Package publishes as version 99.0.0 under a name presented in its README as an unclaimed internal name, positioning it to win dependency-confusion resolution against private registries. Both preinstall and postinstall lifecycle hooks in package.json execute callback.js, which collects installer host identifiers (os.hostname(), process.env.USER, process.cwd(), __dirname, platform/release, internal IPv4 addresses, and process.env.npm_config_registry), base64url-encodes the payload, and transmits it over three redundant channels to the hardcoded host 4li9yfz7.instances.httpworkbench.com: a DNS lookup/resolve4 with the payload as a subdomain label, an HTTP POST, and an HTTPS POST with TLS verification disabled (rejectUnauthorized: false). Any organization that has a private package by this name and lacks a scope/registry pin will pull this public artifact on npm install and beacon host fingerprint data to the external interaction host. The self-labeling as an authorized research PoC does not gate the behavior — every installer of this name is fingerprinted unconditionally.","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 guest-app-ui (npm)","id":"MAL-2026-10096","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":"guest-app-ui","purl":"pkg:npm/guest-app-ui","source":"MAL-2026-10096"}],"products":null,"published":"2026-07-09","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-2026-10096/"}