{"answers":{"affected":"1 open source package ship an affected version, including sea-baileys.","exploited":"There is no known exploitation of MAL-2026-16473 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-2026-16473 is a malicious package in sea-baileys, published on 23 Sep 2026."},"fix_prompt":"MAL-2026-16473 is a malicious package: sea-baileys (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-2026-16473/ (Markdown: https://insights.sbomify.com/MAL-2026-16473/index.md)","id":"MAL-2026-16473","markdown":"https://insights.sbomify.com/MAL-2026-16473/index.md","name":"MAL-2026-16473","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"sea-baileys is a fork of the Baileys WhatsApp Web library. Its package.json remaps the `libsignal` import specifier to `npm:@otaxayun/libsignal-node@latest` — an unrelated maintainer's package pinned to the mutable `latest` dist-tag rather than a fixed version or integrity hash. lib/Signal/libsignal.js routes the installer's Signal Protocol identity private key, signed pre-key private key, session records and sender keys through this dependency, so whatever code `@otaxayun/libsignal-node` resolves to at install time handles the consumer's WhatsApp cryptographic identity and message stream. Because the tag is mutable and owned by a third party outside the sea-baileys publisher, a single publish under that name replaces the crypto implementation on every subsequent `npm install`. Separately, lib/Utils/messages-media.js's prepareWAMessageMedia unconditionally attaches a hardcoded `annotations` block referencing the newsletter JID `120363409928671192@newsletter` (\"HOSHINO AI INFORMATION\") to every outgoing media message when the caller does not supply annotations, silently modifying consumer-generated WhatsApp payloads to advertise the fork author's channel.","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 sea-baileys (npm)","id":"MAL-2026-16473","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":"sea-baileys","purl":"pkg:npm/sea-baileys","source":"MAL-2026-16473"}],"products":null,"published":"2026-09-23","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-2026-16473/"}