🛡️ MAL-2026-3776 — typography-stylecss

Malicious code in typography-stylecss (npm)

Source: amazon-inspector

The package impersonates the legitimate @tailwindcss/typography plugin: README, src/index.js, src/utils.js, and src/styles.js are copied verbatim from the Tailwind Labs plugin, and peerDependencies lists tailwindcss to reinforce the masquerade, but the package is published under the unrelated name typography-stylecss. Appended to src/index.js after the legitimate module.exports = plugin.withOptions(...) is an obfuscator.io-style payload (hex-named identifiers _0x168f6b, _0x3fc27f, etc., with a rotated string table _0x5975). Decoded string-table fragments include platform branching ('win32', 'windows', 'agent-linux-') and a URL path template /agents/<deploymentHash> built against a base URL read from a __SSTAR_API_BASE global, consistent with downloading a platform-specific agent binary and executing it. Because this code sits at module top level, it fires on require('typography-stylecss') / import 'typography-stylecss' — exactly the usage the cloned README instructs developers to add to their tailwind.config.js. Any build or dev server that loads the Tailwind config will trigger the dropper, which fetches and runs an attacker-controlled native binary on the installer's machine.