CVE-2026-85625 | BDVDB-2026-368387 Detail

Description#

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.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-09-04Record published in the CVE List.
2. Version 22026-09-14Most recent update recorded in the CVE List.