{"id":"CVE-2021-23558","aliases":["EUVD-2022-0816","GHSA-4m8h-h59m-m34j","SNYK-JS-BMOOR-2342622"],"status":"published","title":"Prototype Pollution","description":"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)","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01627,"percentile":0.76337,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321"],"published":"2022-01-28T21:31:31Z","modified":"2026-10-20T10:54:32Z","fixes":[{"ecosystem":"npm","package":"bmoor","fixed_in":["0.10.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"bmoor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.1"}]}]},{"source":"osv","ecosystem":"npm","package":"bmoor","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.10.1"}]}]}],"products":[{"vendor":"bmoor_project","product":"bmoor"}],"references":[{"url":"https://snyk.io/vuln/SNYK-JS-BMOOR-2342622","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web"]},{"url":"https://github.com/b-heilman/bmoor/commit/29b0162cc1dc1791fc060891f568b0ae29bc542b","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23558","tags":["advisory"]},{"url":"https://security.snyk.io/vuln/SNYK-JS-BMOOR-598664","tags":["web"]},{"url":"https://github.com/advisories/GHSA-4m8h-h59m-m34j"},{"url":"https://github.com/b-heilman/bmoor","tags":["web"]},{"url":"https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2021-23558","title":"Prototype Pollution","description":"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)","status":"published","published":"2022-01-28T21:31:31.186Z","modified":"2024-09-16T16:23:32.6Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:00.819444Z"}],"euvd":[{"id":"EUVD-2022-0816","description":"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)","status":"published","published":"2022-01-28T21:31:31Z","modified":"2024-09-16T16:23:32Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P","level":"high"}],"updated_at":"2026-11-03T00:55:52.084115Z"}],"ghsa":[{"id":"GHSA-4m8h-h59m-m34j","title":"Prototype Pollution in bmoor","description":"The package bmoor before 0.10.1 is 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)","status":"published","published":"2022-02-01T00:50:09Z","modified":"2023-02-03T05:05:32Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:36:42.703723Z"}],"nvd":[{"id":"CVE-2021-23558","description":"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)","status":"published","published":"2022-01-28T22:15:09.073Z","modified":"2026-06-17T03:38:49.463Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:07:04.178977Z"}],"osv":[{"id":"CVE-2021-23558","description":"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)","status":"published","published":"2022-01-28T22:15:09.073Z","modified":"2026-10-20T10:54:32.320476841Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:18.778776Z"},{"id":"GHSA-4m8h-h59m-m34j","title":"Prototype Pollution in bmoor","description":"The package bmoor before 0.10.1 is 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)","status":"published","published":"2022-02-01T00:50:09Z","modified":"2026-09-10T03:49:11.599202948Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T15:46:37.148947Z"}]}}