{"cve":"CVE-2020-13321","nvd":{"published":"2020-09-30T18:15:19.380","modified":"2026-06-17T02:52:57.200","status":"Modified","description":"A vulnerability was discovered in GitLab versions prior to 13.1. Username format restrictions could be bypassed allowing for html tags to be added.","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:L","score":8.3},"cwes":[],"references":["https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13321.json","https://gitlab.com/gitlab-org/gitlab/-/issues/25751","https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13321.json","https://gitlab.com/gitlab-org/gitlab/-/issues/25751"],"products":["gitlab:gitlab"],"source":"nvd","synced_at":"2026-10-19T21:09:53.489947993+00:00"},"epss":{"cve":"CVE-2020-13321","score":0.01418,"percentile":0.72799,"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."]}