chai-test-mocks
This report shows the evidence for chai-test-mocks@1.2.0, 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-2026-5928 confirms this npm version as malicious.
Advisory
MAL-2026-5928
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in chai-test-mocks (npm)
Details
chai-test-mocks impersonates the legitimate chai-jest-mocks package (replicated README, reused CircleCI/coveralls badges pointing at chai-jest-mocks) but overrides module.exports to a dropper rather than the documented plugin. lib/index.js exports `chain = require('./matchers/beenTest')` while the original `module.exports = chaiJestMock` is left commented out. When a consumer follows the documented usage `chai.use(require('chai-test-mocks'))`, the exported `genMock` invokes `connectNet` in lib/matchers/beenTest.js, which calls `spawn('node', [src, JSON.stringify(dopt)], { detached: true, stdio: ['ignore'] })` and `parmas.unref()` to launch lib/matchers/beenOptions.js as a detached, persistent child process. beenOptions.js performs an HTTPS GET to https://www.jsonkeeper.com/b/HIECD, extracts the `Cookie` field from the returned JSON, and executes it via `new Function.constructor('require', result)` invoked with the real `require`, giving the fetched code full Node module access on the installer's machine. Because jsonkeeper.com is mutable third-party JSON storage with no integrity check, the operator can swap arbitrary post-exploitation code at any time. The function also returns an Express-style `(req,res,next)=>next()` middleware to disguise the dropper as plumbing.
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-test-mocks@1.2.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing chai-test-mocks@1.2.0. 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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