{"cve":"CVE-2025-57330","nvd":{"published":"2025-09-24T19:15:39.850","modified":"2026-06-17T09:43:02.783","status":"Analyzed","description":"The web3-core-subscriptions is a package designed to manages web3 subscriptions. A Prototype Pollution vulnerability in the attachToObject function of web3-core-subscriptions version 1.10.4 and before allows attackers to inject properties on Object.prototype via supplying a crafted payload, causing denial of service (DoS) as the minimum consequence.","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:N/A:H","score":7.5},"cwes":["CWE-1321"],"references":["https://github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/web3-core-subscriptions%401.10.4/index.js","https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57330"],"products":["web3js:web3-core-subscriptions"],"source":"nvd","synced_at":"2026-10-19T22:10:08.713834912+00:00"},"epss":{"cve":"CVE-2025-57330","score":0.00392,"percentile":0.33321,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hhf6-3xpg-pggx","url":"https://osv.dev/vulnerability/GHSA-hhf6-3xpg-pggx","summary":"web3-core-subscriptions has a Prototype Pollution vulnerability","modified":"2025-09-25T17:12:19.059943Z","packages":[{"ecosystem":"npm","name":"web3-core-subscriptions","purl":"pkg:npm/web3-core-subscriptions","ranges":["<=2.0.0-alpha.1"],"fixed":[]}]}],"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."]}