GHSA-529q-4j3p-7c5r
algoliasearch-helper is vulnerable to Prototype Pollution in _merge()
Quick fix
GHSA-529q-4j3p-7c5r — algoliasearch-helper: upgrade to the fixed version with the command below.
npm install algoliasearch-helper@3.11.2Details
Versions of the package algoliasearch-helper from 2.0.0-rc1 and before 3.11.2 are vulnerable to Prototype Pollution in the _merge() function in merge.js, which allows constructor.prototype to be written even though doing so throws an error. In the "extreme edge-case" that the resulting error is caught, code injected into the user-supplied search parameter may be exeucted.
This is related to but distinct from the issue reported in [CVE-2021-23433](https://security.snyk.io/vuln/SNYK-JS-ALGOLIASEARCHHELPER-1570421).
**NOTE:** This vulnerability is not exploitable in the default configuration of InstantSearch since searchParameters are not modifiable by users.
Are you affected?
Enter the version of the package you're using.
Affected packages
2.0.0-rc1Fixed in: 3.11.2npm install algoliasearch-helper@3.11.2References
- https://nvd.nist.gov/vuln/detail/CVE-2025-3193[ADVISORY]
- https://github.com/algolia/algoliasearch-helper-js/issues/922[WEB]
- https://github.com/algolia/algoliasearch-helper-js/commit/776dff23c87b0902e554e02a8c2567d2580fe12a[WEB]
- https://github.com/algolia/algoliasearch-helper-js[PACKAGE]
- https://security.snyk.io/vuln/SNYK-JS-ALGOLIASEARCHHELPER-3318396[WEB]