{"id":"CVE-2023-26135","aliases":["GHSA-7px2-3c2p-q4v4"],"url":"https://o3.security/vulnerability/CVE-2023-26135","summary":"flatnest Prototype Pollution vulnerability","details":"All versions of the package flatnest are vulnerable to Prototype Pollution via the nest() function in the flatnest/nest.js file.","published":"2023-06-30T05:00:01.815Z","modified":"2026-07-15T01:49:09.228090597Z","cvss":{"score":7.3,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P"},"epss":null,"cisaKev":null,"exploitsKnown":2,"affectedPackages":[{"ecosystem":"npm","name":"flatnest","fixedVersion":null}],"fix":{"url":"https://github.com/brycebaril/node-flatnest/commit/27d569baf9d9d25677640edeaf2d13af165868d6","label":"brycebaril/node-flatnest@27d569b"},"references":[{"type":"WEB","url":"https://github.com/brycebaril/node-flatnest/blob/b7d97ec64a04632378db87fcf3577bd51ac3ee39/nest.js%23L43"},{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-JS-FLATNEST-3185149"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/26xxx/CVE-2023-26135.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-26135"},{"type":"REPORT","url":"https://github.com/brycebaril/node-flatnest/issues/4"},{"type":"FIX","url":"https://github.com/brycebaril/node-flatnest/commit/27d569baf9d9d25677640edeaf2d13af165868d6"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:09.228090597Z"}}