{"cve":"CVE-2021-3967","nvd":{"published":"2022-02-26T23:15:08.830","modified":"2026-06-17T04:06:18.320","status":"Modified","description":"Improper Access Control in GitHub repository zulip/zulip prior to 4.10.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-284"],"references":["https://github.com/zulip/zulip/commit/d5db254ca8167995a1654d1c45ffc74b2fade39a","https://huntr.dev/bounties/2928a625-0467-4a0a-b4e2-e27322786686","https://github.com/zulip/zulip/commit/d5db254ca8167995a1654d1c45ffc74b2fade39a","https://huntr.dev/bounties/2928a625-0467-4a0a-b4e2-e27322786686"],"products":["zulip:zulip"],"source":"nvd","synced_at":"2026-10-19T21:28:04.509275555+00:00"},"epss":{"cve":"CVE-2021-3967","score":0.00838,"percentile":0.57786,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}