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CVE-2026-85625: sift.js

Severity

9.2 (CRITICAL)

Vendor

CRCN

Affected versions

0 through 17.1.3

Patch status

Unknown

Published

2026-09-04T15:17:42.880

Modified

2026-09-04T15:17:42.880

Why it matters

This matters because the affected product may allow code execution. Prioritize systems that are internet-facing or have privileged access to other infrastructure.

Recommended admin actions

• Prioritize validation immediately due to critical CVSS severity.

Technical summary

sift (sift.js) 17.1.3 enumerates query keys with for…in, which walks the object prototype chain, and dispatches any matched operator key including $where. The $where operation compiles a string value into a function using new Function unless CSP_ENABLED is set (not set by default). As a result, if a prototype-pollution primitive elsewhere in the process sets Object.prototype.$where to a malicious string, even benign filter calls such as sift({}) execute arbitrary JavaScript. Additionally, passing an untrusted query object containing a string $where directly to sift results in code execution under the default configuration.

View the official NVD record for CVE-2026-85625

CVE data is sourced from NVD/CNA records and optional enrichment. Validate against the vendor advisory before taking production action.