chai-as-operated
This report shows the evidence for chai-as-operated@6.0.3, the only known version.
This package appears in our research on the fake chai plugin campaign, with how it works, the full package list and what to do if you installed it.
OpenSSF/OSV Malicious Advisory
imported 4mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-6350 confirms this npm version as malicious.
Advisory
MAL-2026-6350
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in chai-as-operated (npm)
Details
Package name impersonates the widely-used `chai-as-promised` (README instructs `chai.use(chaiAsOperated)`) and the README badges further impersonate `pino` (npm/GitHub Actions shields point at pinojs/pino). On `require('chai-as-operated')`, `index.js` exposes a middleware factory that spawns a detached `node./lib/initializeCaller.js`. That script defines a fake `process` object containing base64-obfuscated values (`DEV_API_KEY` decodes to `https://amethyst-lorrin-26.tiiny.site/index.json`, plus obfuscated `x-secret-key` header credentials), then performs `axios.get(apiEndpoint,...)` and executes the response body via `new Function.constructor('require', response)(require)` with retry logic. The remote payload runs with full Node `require` access in a detached background process. The destination is a free `tiiny.site` host — author-mutable, anonymous infrastructure — and the URL is hidden behind base64 to evade casual review and string scanners. This is a classic typosquat + remote-execution dropper.
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 chai-as-operated@6.0.3.
The versions list below shows the verdict for each recorded version.
- Avoid installing chai-as-operated@6.0.3. 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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