tailwind-typography-style

{"modified":"2026-06-16T16:08:50Z","published":"2026-06-16T00:29:23Z","schema_version":"1.7.4","id":"MAL-2026-5854","aliases":["GHSA-xw83-9jhm-jj7j"],"summary":"Malicious code in tailwind-typography-style (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (5b5b1eea6bfed81a0e57b9af519c45155347e3937a20dc8ef4e9ab1cae6ff73d)\nThe 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\n## Source: ghsa-malware (e586cfdd5f2f3377c2cb4ee333817075c3ca88bf4261e741b9d7ef527ca80868)\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","affected":[{"package":{"ecosystem":"npm","name":"tailwind-typography-style"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"versions":["0.5.8"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"},{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"evidence_files":[{"path":"src/index.js","sha256":"2eafde87ed00532e9de263396629a4612f960ba7788c8fb199d5e88dfac6dc87","tlsh":"6f021961209662a1034b115b0f4ed419f1aa89d75c1fb8a0f1fde1686f4824e8bb4eff"}]}}}],"references":[{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-xw83-9jhm-jj7j"},{"type":"PACKAGE","url":"https://www.npmjs.com/package/tailwind-typography-style/v/0.5.8"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"source":"ghsa-malware","sha256":"e586cfdd5f2f3377c2cb4ee333817075c3ca88bf4261e741b9d7ef527ca80868","import_time":"2026-06-16T01:31:34.732349424Z","id":"GHSA-xw83-9jhm-jj7j","modified_time":"2026-06-16T00:29:23Z","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"amazon-inspector","sha256":"5b5b1eea6bfed81a0e57b9af519c45155347e3937a20dc8ef4e9ab1cae6ff73d","import_time":"2026-06-16T16:06:34.004301055Z","id":"IN-MAL-2026-006762","modified_time":"2026-06-16T15:35:30Z","versions":["0.5.8"]}]}}