{"id":"GHSA-4vjr-hfpp-2m7w","summary":"expand-object Vulnerable to Prototype Pollution via the expand() Function","details":"Versions of the package expand-object from 0.0.0 to 0.4.2 are vulnerable to Prototype Pollution in the expand() function in index.js. This function expands the given string into an object and allows a nested property to be set without checking the provided keys for sensitive properties like __proto__.","aliases":["CVE-2025-3197"],"modified":"2025-04-04T19:27:20.379263Z","published":"2025-04-04T06:34:23Z","database_specific":{"github_reviewed_at":"2025-04-04T18:24:05Z","nvd_published_at":"2025-04-04T05:15:46Z","cwe_ids":["CWE-1321"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-3197"},{"type":"WEB","url":"https://gist.github.com/miguelafmonteiro/d8f66af61d14e06338b688f90c4dfa7c"},{"type":"PACKAGE","url":"https://github.com/jonschlinkert/expand-object"},{"type":"WEB","url":"https://github.com/jonschlinkert/expand-object/blob/master/index.js#L13"},{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-JS-EXPANDOBJECT-5821390"}],"affected":[{"package":{"name":"expand-object","ecosystem":"npm","purl":"pkg:npm/expand-object"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.4.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-4vjr-hfpp-2m7w/GHSA-4vjr-hfpp-2m7w.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}