@servicetitan/quick-actions@1.15.5
Malicious code in @servicetitan/quick-actions (npm)
Analysis
The package's preinstall hook (setup.mjs) downloads the Bun JavaScript runtime from the official oven-sh GitHub release and executes a bundled 727KB file (math_init.js) with it. math_init.js is a heavily obfuscated payload: its strings are encoded in a large array and decoded at runtime via a custom base64-style decoder, so its actual behavior is concealed from inspection. The package is a React UI component library and has no legitimate need to download a runtime and run an opaque obfuscated payload during installation. The payload's network destinations and data-handling behavior are hidden behind the obfuscation and could not be determined statically.
- analyzed by
- Leitwacht
- first seen
- Aug 4, 2026, 11:18 AM
- analyzed
- Aug 4, 2026, 02:17 PM
- weekly installs
- 1,159
Related advisories
- @servicetitan/anvil-token@0.4.4
- @servicetitan/cp-mfe-dev@1.115.4
- @servicetitan/grid@0.0.66
- @servicetitan/html-sketchapp@4.2.11
- @onereach/si-alert@0.4.13
- @onereach/pnpm-audit-junit@1.0.5
- @onereach/si-checkbox@0.6.7
- @onereach/idw-apps@0.1.5
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.