{"answers":{"affected":"1 open source package ship an affected version, including @mikudeveloper/baileys.","exploited":"There is no known exploitation of MAL-2026-16386 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-2026-16386 is a malicious package in @mikudeveloper/baileys, published on 22 Sep 2026."},"fix_prompt":"MAL-2026-16386 is a malicious package: @mikudeveloper/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-2026-16386/ (Markdown: https://insights.sbomify.com/MAL-2026-16386/index.md)","id":"MAL-2026-16386","markdown":"https://insights.sbomify.com/MAL-2026-16386/index.md","name":"MAL-2026-16386","record":{"aliases":["GHSA-2xx9-x9v7-25x2"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"This package is a fork of Baileys that declares `libsignal` in `package.json` as `github:tenka-san/libsignal-node` — a git dependency with no commit SHA, tag, or integrity check, resolving to whatever HEAD returns at install time and executing any lifecycle scripts inside it. The referenced GitHub account is unrelated to the upstream WhiskeySockets/libsignal-node maintainer, so its owner controls install-time code on every installer of this package. Separately, `makeNewsletterSocket` schedules a 120-second `setTimeout` after connection that fetches a channel-ID list from a hardcoded, mutable URL (`raw.githubusercontent.com/MikuDevReal/V2.0/refs/heads/main/pepek.json`) and issues `QueryIds.FOLLOW` on each entry using the installer's authenticated WhatsApp session, silently subscribing them to author-selected channels with no disclosure in the README. The remote list is author-mutable, so follow targets can change at any time.\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.","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 @mikudeveloper/baileys (npm)","id":"MAL-2026-16386","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":"@mikudeveloper/baileys","purl":"pkg:npm/%40mikudeveloper/baileys","source":"MAL-2026-16386"}],"products":null,"published":"2026-09-22","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-2026-16386/"}