{"cve":"CVE-2021-22251","nvd":{"published":"2021-08-23T20:15:12.830","modified":"2026-06-17T03:36:53.270","status":"Modified","description":"Improper validation of invited users' email address in GitLab EE affecting all versions since 12.2 allowed projects to add members with email address domain that should be blocked by group settings","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","score":4.3},"cwes":["CWE-863"],"references":["https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22251.json","https://gitlab.com/gitlab-org/gitlab/-/issues/14004","https://hackerone.com/reports/679567","https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22251.json","https://gitlab.com/gitlab-org/gitlab/-/issues/14004"],"products":["gitlab:gitlab"],"source":"nvd","synced_at":"2026-10-19T21:21:57.125947417+00:00"},"epss":{"cve":"CVE-2021-22251","score":0.00819,"percentile":0.57213,"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."]}