tailwind-opentype
This report shows the evidence for tailwind-opentype@1.2.3, the only known version.
OpenSSF/OSV Malicious Advisory
imported 3mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-12222 confirms this npm version as malicious.
Advisory
MAL-2026-12222
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in tailwind-opentype (npm)
Details
dist/index.js re-exports a benign Tailwind plugin and appends an eval(atob(...)) payload that runs when the module is required (e.g. from a project's tailwind.config). The decoded payload uses \u-escaped module names to require('http'), require('https'), and require('child_process'), then queries public Ethereum RPC endpoints (eth.blockscout.com, 1rpc.io/eth, eth.drpc.org, ethereum-rpc.publicnode.com) for transactions from a hardcoded attacker address (0xa322E5f3D311D3080e6f01210633e9aDC2490Ef1). The transaction's `to` field is decoded into a pair of C2 IPs, from which an XOR-encoded stage-2 payload is fetched over HTTP at /0x/cls and /0x/ls with an x-payload-b64 header, and executed both via eval() and via a detached spawn('node', ['-e',...]).unref(). Every network destination, module name, and identifier is stored as \u-escaped sequences and the outer payload is base64-wrapped in eval(atob()) to defeat static review. Loading the module yields full remote code execution on the build host with attacker-controlled, on-chain-resolved payloads.
References
Source & flagged code
0 flagged · loading sourceNo flagged code excerpts are attached to this scan.
Findings
1 High
HighOsv Malicious Advisory
Affected versions and remediation
This report applies to tailwind-opentype@1.2.3.
The versions list below shows the verdict for each recorded version.
- Avoid installing tailwind-opentype@1.2.3. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.
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