{"cve":"CVE-2021-22254","nvd":{"published":"2021-08-20T18:15:07.577","modified":"2026-06-17T03:36:53.607","status":"Modified","description":"Under very specific conditions a user could be impersonated using Gitlab shell. This vulnerability affects GitLab CE/EE 13.1 and later through 14.1.2, 14.0.7 and 13.12.9.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3},"cwes":["CWE-116"],"references":["https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22254.json","https://gitlab.com/gitlab-org/gitlab/-/issues/300265","https://hackerone.com/reports/1087806","https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22254.json","https://gitlab.com/gitlab-org/gitlab/-/issues/300265"],"products":["gitlab:gitlab"],"source":"nvd","synced_at":"2026-10-19T21:21:57.125947417+00:00"},"epss":{"cve":"CVE-2021-22254","score":0.0087,"percentile":0.58826,"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."]}