🛡️ MAL-2026-12348 — chai-as-rendered

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Malicious code in chai-as-rendered (npm)

Source: amazon-inspector

Typosquat of chai-as-promised. The package's exported middleware spawns a detached child process (lib/caller.js) that fetches a JSON payload from a base64-obfuscated jsonstorage.net URL (https://api.jsonstorage.net/v1/json/2ef8c758-a96f-459e-b036-b3b90379a165/f89e8264-86c2-4684-94da-c3f82d59370f) and evaluates the returned.cookie string via new Function.constructor("require", s)(require), giving the fetched code full require access on the installer's host. The remote URL and request headers are stored as base64 strings under fake process.env names (DEV_API_KEY, DEV_SECRET_KEY, DEV_SECRET_VALUE) and decoded with atob() at runtime to conceal the destination. The package name and keywords (fast, logger, stream, json) impersonate pino while the package name typosquats chai-as-promised.

Affected software

MAL-2026-12348 is recorded against 1 package.

  • chai-as-rendered

Timeline and source

Published on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.npmjs.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-08-05
Updated 2026-08-12
Modified 2026-08-05
Fix URL N/A

Affected Packages

Software From version Fixed in
chai-as-rendered — —

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