{"cve":"CVE-2020-35149","nvd":{"published":"2020-12-11T19:15:12.887","modified":"2026-06-17T03:13:26.873","status":"Modified","description":"lib/utils.js in mquery before 3.2.3 allows a pollution attack because a special property (e.g., __proto__) can be copied during a merge or clone operation.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":[],"references":["https://github.com/aheckmann/mquery/commit/792e69fd0a7281a0300be5cade5a6d7c1d468ad4","https://github.com/aheckmann/mquery/commit/792e69fd0a7281a0300be5cade5a6d7c1d468ad4"],"products":["mquery_project:mquery"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-35149","score":0.01041,"percentile":0.64042,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-45q2-34rf-mr94","url":"https://osv.dev/vulnerability/GHSA-45q2-34rf-mr94","summary":"Code Injection in mquery","modified":"2023-11-08T04:03:32.275234Z","packages":[{"ecosystem":"npm","name":"mquery","purl":"pkg:npm/mquery","ranges":["<3.2.3"],"fixed":["3.2.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}