Bug 2399887 (CVE-2025-3193) - CVE-2025-3193 algoliasearch-helper: algoliasearch-helper prototype pollution
Summary: CVE-2025-3193 algoliasearch-helper: algoliasearch-helper prototype pollution
Keywords:
Status: NEW
Alias: CVE-2025-3193
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2400141 2400142 2400143 2400144 2400145 2400146 2400147 2400148 2400149
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-09-27 06:01 UTC by OSIDB Bzimport
Modified: 2025-09-29 16:35 UTC (History)
8 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2025-09-27 06:01:24 UTC 
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.
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