{"id":"CVE-2021-23558","aliases":["GHSA-4m8h-h59m-m34j"],"url":"https://o3.security/vulnerability/CVE-2021-23558","summary":"Prototype Pollution in bmoor","details":"The package bmoor before 0.10.1 are vulnerable to Prototype Pollution due to missing sanitization in set function. **Note:** This vulnerability derives from an incomplete fix in [CVE-2020-7736](https://security.snyk.io/vuln/SNYK-JS-BMOOR-598664)","published":"2022-01-28T22:15:09.073Z","modified":"2026-07-09T10:52:44.384428Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"bmoor","fixedVersion":"0.10.1"}],"fix":{"url":"https://github.com/b-heilman/bmoor/commit/29b0162cc1dc1791fc060891f568b0ae29bc542b","label":"b-heilman/bmoor@29b0162"},"references":[{"type":"ADVISORY","url":"https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation/"},{"type":"FIX","url":"https://github.com/b-heilman/bmoor/commit/29b0162cc1dc1791fc060891f568b0ae29bc542b"},{"type":"EVIDENCE","url":"https://snyk.io/vuln/SNYK-JS-BMOOR-2342622"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T10:52:44.384428Z"}}