CVE-2025-3193

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/algolia/algoliasearch-helper-js/commit/776dff23c87b0902e554e02a8c2567d2580fe12a	Patch
https://github.com/algolia/algoliasearch-helper-js/issues/922	Exploit Issue Tracking Patch
https://security.snyk.io/vuln/SNYK-JS-ALGOLIASEARCHHELPER-3318396	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:algolia:algoliasearch-helper:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2025-09-27 05:15

Updated : 2025-10-05 00:15

NVD link : CVE-2025-3193

Mitre link : CVE-2025-3193

CVE.ORG link : CVE-2025-3193

JSON object : View

Products Affected

algolia

algoliasearch-helper

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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