{"answers":{"affected":"1 open source package ship an affected version, including jexkcode.","exploited":"There is no known exploitation of MAL-2026-16220 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-2026-16220 is a malicious package in jexkcode, published on 16 Sep 2026."},"fix_prompt":"MAL-2026-16220 is a malicious package: jexkcode (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-2026-16220/ (Markdown: https://insights.sbomify.com/MAL-2026-16220/index.md)","id":"MAL-2026-16220","markdown":"https://insights.sbomify.com/MAL-2026-16220/index.md","name":"MAL-2026-16220","record":{"aliases":["GHSA-j72h-3h5h-43v5"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Versions 1.0.1 through 1.1.4 of jexkcode automatically follow a hard-coded WhatsApp newsletter whenever a WhatsApp connection opens. The package waits three seconds and calls newsletterFollow without obtaining user consent or exposing a configuration option. The README advertises newsletter support but does not disclose this automatic account modification. Versions through 1.1.1 used a malformed newsletter JID; version 1.1.2 corrected it. Subsequent commits removed both failure and success logs, so version 1.1.4 performs the automatic follow without visible output. This behavior is unrelated to the package's stated functionality and modifies the user's WhatsApp account without authorization.\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 jexkcode (npm)","id":"MAL-2026-16220","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":"jexkcode","purl":"pkg:npm/jexkcode","source":"MAL-2026-16220"}],"products":null,"published":"2026-09-16","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-2026-16220/"}