TI-2025-02792 Aliases CVE-2025-3193 GHSA-529q-4j3p-7c5r

Prototype pollution in algoliasearch-helper

HIGH 66CWE-1321Published 2025-09-27 · Updated 2026-08-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00516 44th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial algoliasearch-helper: 3.11.2algoliasearch-helper (npm): 3.11.2Red Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	algoliasearch-helper	2.0.0-rc1 to before 3.11.2	3.11.2	Patch available	CNA
—	algoliasearch-helper (npm)	2.0.0-rc1 to before 3.11.2	3.11.2	Patch available	GHSA-529q-4j3p-7c5r

algoliasearch-helper Vendor— Affected 2.0.0-rc1 to before 3.11.2 Fixed in 3.11.2 Patch available CNA
algoliasearch-helper (npm) Vendor— Affected 2.0.0-rc1 to before 3.11.2 Fixed in 3.11.2 Patch available GHSA-529q-4j3p-7c5r

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:algolia:algoliasearch-helper::::::node.js::*	2.0.0 to before 3.11.2	Vulnerable	Algolia

cpe:2.3:a:algolia:algoliasearch-helper:*:*:*:*:*:node.js:*:* Versions 2.0.0 to before 3.11.2 Vulnerable ·Algolia

Remediation

Fix · CNA algoliasearch-helper Fixed in 3.11.2
Fix · GHSA-529q-4j3p-7c5r algoliasearch-helper (npm) Fixed in 3.11.2 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Gatekeeper 3	Affected	No fix yet: Fix deferred
Logging Subsystem for Red Hat OpenShift	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2025-3193
2026-10-03 Alias added: GHSA-529q-4j3p-7c5r

References

TI-2021-06125 Prototype pollution in algoliasearch-helper CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences