{"id":"GHSA-77xq-cpvg-7xm2","summary":"Prototype pollution in @tsed/core","details":"This affects the package @tsed/core before 5.65.7. This vulnerability relates to the `deepExtend` function which is used as part of the utils directory. Depending on if user input is provided, an attacker can overwrite and pollute the object prototype of a program.","aliases":["CVE-2020-7748","SNYK-JS-TSEDCORE-1019382"],"modified":"2026-05-07T04:56:59.477926844Z","published":"2021-05-10T19:07:56Z","database_specific":{"github_reviewed_at":"2021-04-20T17:41:36Z","nvd_published_at":"2020-10-20T11:15:00Z","cwe_ids":["CWE-1321","CWE-915"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7748"},{"type":"WEB","url":"https://github.com/TypedProject/tsed/commit/1395773ddac35926cf058fc6da9fb8e82266761b"},{"type":"WEB","url":"https://github.com/TypedProject/tsed/blob/production/packages/core/src/utils/deepExtends.ts%23L36"},{"type":"PACKAGE","url":"https://github.com/tsedio/tsed"},{"type":"WEB","url":"https://snyk.io/vuln/SNYK-JS-TSEDCORE-1019382"}],"affected":[{"package":{"name":"@tsed/core","ecosystem":"npm","purl":"pkg:npm/%40tsed/core"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"5.65.7"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/05/GHSA-77xq-cpvg-7xm2/GHSA-77xq-cpvg-7xm2.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}