@or-sdk/idw-skill@1.4.3
Malicious code in @or-sdk/idw-skill (npm)
Analysis
The package's preinstall hook (node setup.mjs) downloads the Bun runtime from github[.]com/oven-sh/bun/releases/download/bun-v1.3.13/ and uses it to execute a bundled 727KB obfuscated script, math_init.js. Both the hook and the payload are obfuscated with a large encoded string array and a custom decoder, so the payload's logic is hidden at install time. The package also declares a dependency on @or-sdk/base, a package in the same namespace. Installing this package triggers the download of a runtime and the execution of an opaque, obfuscated install-time payload.
- analyzed by
- Leitwacht
- first seen
- Aug 4, 2026, 11:57 AM
- analyzed
- Aug 4, 2026, 03:56 PM
- weekly installs
- 87
Related advisories
- @or-sdk/base@0.44.6
- @or-sdk/sdk-api@0.29.4
- @or-sdk/providers@0.3.8
- @or-sdk/api-tokens@1.4.4
- @or-sdk/views@3.1.7
- @or-sdk/tickets@1.9.7
- @or-sdk/mcp-tools@0.5.4
- @or-sdk/source@2.1.7
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.