{"id":"CVE-2025-3193","aliases":["GHSA-529q-4j3p-7c5r"],"url":"https://o3.security/vulnerability/CVE-2025-3193","summary":"algoliasearch-helper is vulnerable to Prototype Pollution in _merge()","details":"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.\r\rThis is related to but distinct from the issue reported in [CVE-2021-23433](https://security.snyk.io/vuln/SNYK-JS-ALGOLIASEARCHHELPER-1570421).\r\r**NOTE:** This vulnerability is not exploitable in the default configuration of InstantSearch since searchParameters are not modifiable by users.","published":"2025-09-27T05:00:07.140Z","modified":"2026-08-09T03:30:45.486274372Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"algoliasearch-helper","fixedVersion":"3.11.2"}],"fix":{"url":"https://github.com/algolia/algoliasearch-helper-js/commit/776dff23c87b0902e554e02a8c2567d2580fe12a","label":"algolia/algoliasearch-helper-js@776dff2"},"references":[{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-JS-ALGOLIASEARCHHELPER-3318396"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/3xxx/CVE-2025-3193.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-3193"},{"type":"REPORT","url":"https://github.com/algolia/algoliasearch-helper-js/issues/922"},{"type":"FIX","url":"https://github.com/algolia/algoliasearch-helper-js/commit/776dff23c87b0902e554e02a8c2567d2580fe12a"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-09T03:30:45.486274372Z"}}