chai-as-bench (npm) · Malicious Code
Affects chai-as-benchSource GCVE Database
Malicious package : remove chai-as-bench and rotate any secrets on hosts that installed it.
Data as of 10 Aug 2026, 15:52 UTC
Malicious package
Published to npm · OSV MAL-2026-13699
What to do
Remove chai-as-bench from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| npmchai-as-bench | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
The npm package 'chai-as-bench' version 7.0.3 is a malicious supply-chain threat masquerading as a chai plugin. It contains a heavily obfuscated multi-megabyte payload that executes on every require(), unrelated to its advertised functionality. The package includes stolen files from an unrelated project as camouflage and exports a no-op middleware. This behavior is typical of npm packages designed to target developers who mistype legitimate package names.