{"id":"CVE-2020-13321","aliases":["BIT-gitlab-2020-13321","EUVD-2020-5581","GHSA-wh94-79gr-cv69","UBUNTU-CVE-2020-13321"],"status":"published","title":"A vulnerability was discovered in GitLab versions prior to 13.1. Username format restrictions...","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.","severity":{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01418,"percentile":0.73174,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2020-09-29T18:40:43Z","modified":"2026-10-20T10:51:47Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["12.10.13","13.0.8","13.1.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"12.10.13"},{"introduced":"13.0.0"},{"fixed":"13.0.8"},{"introduced":"13.1.0"},{"fixed":"13.1.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"gitlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.4.3+dfsg-9","8.4.3+dfsg-12","8.5.8+dfsg-5"]}],"products":[{"vendor":"gitlab","product":"gitlab"}],"references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/25751","tags":["x_refsource_MISC","x_transferred","Exploit","Vendor Advisory","advisory","evidence"]},{"url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13321.json","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13321","tags":["web"]},{"url":"https://github.com/advisories/GHSA-wh94-79gr-cv69"},{"url":"https://ubuntu.com/security/CVE-2020-13321","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-13321","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-13321","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.","status":"published","published":"2020-09-29T18:40:43Z","modified":"2024-08-04T12:18:17.095Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:35:53.868619Z"}],"euvd":[{"id":"EUVD-2020-5581","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.","status":"published","published":"2020-09-29T18:40:43Z","modified":"2024-08-04T12:18:17Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-03T03:07:38.311662Z"}],"ghsa":[{"id":"GHSA-wh94-79gr-cv69","title":"A vulnerability was discovered in GitLab versions prior to 13.1. Username format restrictions...","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.","status":"published","published":"2022-05-24T17:29:45Z","modified":"2023-01-29T05:04:12Z","updated_at":"2026-11-02T14:45:29.899073Z"}],"nvd":[{"id":"CVE-2020-13321","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.","status":"published","published":"2020-09-30T18:15:19.38Z","modified":"2026-06-17T02:52:57.2Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:17.70091Z"}],"osv":[{"id":"CVE-2020-13321","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.","status":"published","published":"2020-09-30T18:15:19.38Z","modified":"2026-10-20T10:51:47.042525262Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:44:14.034736Z"},{"id":"UBUNTU-CVE-2020-13321","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.","status":"published","published":"2020-09-30T18:15:00Z","modified":"2025-10-24T04:48:30Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high"},{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:54:22.804634Z"},{"id":"BIT-gitlab-2020-13321","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.","status":"published","published":"2024-03-06T11:22:09.884Z","modified":"2026-09-08T08:47:36.914628643Z","updated_at":"2026-11-02T15:28:29.999658Z"}]}}