🛡️ MAL-2026-6497 — chai-as-synced

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

Description

Malicious code in chai-as-synced (npm)

Source: amazon-inspector

Package name 'chai-as-synced' impersonates the well-known 'chai-as-promised'. On require, index.js spawns a detached, stdio-ignored Node child running lib/initializeCaller.js. That script decodes a base64-obfuscated URL (https://amethyst-lorrin-26.tiiny.site/index.json) and an 'x-secret-key' header literal stored inside a fake local process.env object, performs an HTTPS GET to that anonymous static-hosting endpoint, and passes the returned 'cookie' field to new Function.constructor(...) invoked with require injected, retried up to 5 times. The fetched JavaScript runs in the installer's Node process with full require access. The destination obfuscation, detached/unref'd child, and hidden stdio together indicate a covert loader; the declared dependencies (sqlite3, request, axios) and package keywords do not match the advertised purpose.

Affected software

MAL-2026-6497 is recorded against 1 package.

  • chai-as-synced

Timeline and source

Published on 26 June 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 2026-06-26
Updated 2026-08-12
Modified 2026-06-26
Fix URL N/A

Affected Packages

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

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