{"answers":{"affected":"1 open source package ship an affected version, including tailwind-typography-style.","exploited":"There is no known exploitation of MAL-2026-5854 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-2026-5854 is a malicious package in tailwind-typography-style, published on 16 Jun 2026."},"fix_prompt":"MAL-2026-5854 is a malicious package: tailwind-typography-style (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-2026-5854/ (Markdown: https://insights.sbomify.com/MAL-2026-5854/index.md)","id":"MAL-2026-5854","markdown":"https://insights.sbomify.com/MAL-2026-5854/index.md","name":"MAL-2026-5854","record":{"aliases":["GHSA-xw83-9jhm-jj7j"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The package impersonates @tailwindcss/typography by name and ships a verbatim copy of tailwindlabs/tailwindcss-typography's src/ tree (index.js, styles.js, utils.js) so it appears functional. After the legitimate `module.exports = plugin.withOptions(...)` block, src/index.js appends a custom string-shuffle cipher (the `_$_1e42` IIFE and `sfL` decoder) that decodes the strings `require`, `module`, and `constructor`, retrieves the Function constructor via `sfL[EKc]`, compiles a deobfuscated body string into a function (`var xBg=dgC(Apa,sfL(joW)); var pYd=xBg(sfL('o B%v[Raca...'));`), and immediately invokes it (`Tgw(2509)`). Node's `require` is stashed on `global` under a deobfuscated key so the dynamically-created function has full access to the filesystem, network, and child_process. Any project that does `require('tailwind-typography-style')` (or imports it through a Tailwind config) executes attacker-controlled code at module load while the legitimate plugin API masks the behavior. Two layers of custom Fisher–Yates string-shuffle obfuscation are used to hide payload contents from static review — there is no legitimate reason for a Tailwind CSS plugin to perform runtime code generation.\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 tailwind-typography-style (npm)","id":"MAL-2026-5854","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":"tailwind-typography-style","purl":"pkg:npm/tailwind-typography-style","source":"MAL-2026-5854"}],"products":null,"published":"2026-06-16","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-2026-5854/"}