{"cve":"CVE-2021-39927","nvd":{"published":"2022-01-18T17:15:08.670","modified":"2026-06-17T04:04:26.490","status":"Modified","description":"Server side request forgery protections in GitLab CE/EE versions between 8.4 and 14.4.4, between 14.5.0 and 14.5.2, and between 14.6.0 and 14.6.1 would fail to protect against attacks sending requests to localhost on port 80 or 443 if GitLab was configured to run on a port other than 80 or 443","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-918"],"references":["https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39927.json","https://gitlab.com/gitlab-org/gitlab/-/issues/340476","https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39927.json","https://gitlab.com/gitlab-org/gitlab/-/issues/340476"],"products":["gitlab:gitlab"],"source":"nvd","synced_at":"2026-10-19T21:27:20.926095847+00:00"},"epss":{"cve":"CVE-2021-39927","score":0.00573,"percentile":0.47333,"date":"2026-11-01"},"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."]}