MAL-2026-3776
Dashboard / Malicious Package / MAL-2026-3776
MAL-2026-3776
Summary: Malicious code in typography-stylecss (npm)
Details: Source: amazon-inspector (4eeb50f69746fd21696baaa7d3534bbd22489edb037742ca591d49ca88981f70) 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.
Affected packages
Package
Name: typography-stylecss
Purl: pkg:npm/typography-stylecss
Affected ranges
Type: N/A
Events:
