{"cve":"CVE-2021-23771","nvd":{"published":"2022-03-17T12:15:07.740","modified":"2026-06-17T03:38:52.693","status":"Modified","description":"This affects all versions of package notevil; all versions of package argencoders-notevil. It is vulnerable to Sandbox Escape leading to Prototype pollution. The package fails to restrict access to the main context, allowing an attacker to add or modify an object's prototype. **Note:** This vulnerability derives from an incomplete fix in [SNYK-JS-NOTEVIL-608878](https://security.snyk.io/vuln/SNYK-JS-NOTEVIL-608878).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":["CWE-1321"],"references":["https://snyk.io/vuln/SNYK-JS-ARGENCODERSNOTEVIL-2388587","https://snyk.io/vuln/SNYK-JS-NOTEVIL-2385946","https://snyk.io/vuln/SNYK-JS-ARGENCODERSNOTEVIL-2388587","https://snyk.io/vuln/SNYK-JS-NOTEVIL-2385946"],"products":["argencoders-notevil_project:argencoders-notevil","notevil_project:notevil"],"source":"nvd","synced_at":"2026-10-19T21:29:06.454770966+00:00"},"epss":{"cve":"CVE-2021-23771","score":0.01013,"percentile":0.6324,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-8g4m-cjm2-96wq","url":"https://osv.dev/vulnerability/GHSA-8g4m-cjm2-96wq","summary":"Sandbox escape in notevil and argencoders-notevil","modified":"2023-11-08T04:05:13.119729Z","packages":[{"ecosystem":"npm","name":"notevil","purl":"pkg:npm/notevil","ranges":["<=1.3.3"],"fixed":[]},{"ecosystem":"npm","name":"argencoders-notevil","purl":"pkg:npm/argencoders-notevil","ranges":["<=2.5.0"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}