{"id":"CVE-2021-20137","aliases":["EUVD-2021-7594","GHSA-3m6f-2h66-fxv5"],"status":"published","title":"A reflected cross-site scripting vulnerability exists in the url parameter of the /cgi-bin/luci...","description":"A reflected cross-site scripting vulnerability exists in the url parameter of the /cgi-bin/luci/site_access/ page on the Gryphon Tower router's web interface. An attacker could exploit this issue by tricking a user into following a specially crafted link, granting the attacker javascript execution in the context of the victim's browser.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02315,"percentile":0.83543,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-12-09T15:24:32Z","modified":"2026-06-17T03:33:20Z","exploits":[{"source":"nuclei","id":"CVE-2021-20137","title":"Gryphon Tower - Cross-Site Scripting","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-20137.yaml"}],"products":[{"vendor":"gryphonconnect","product":"gryphon_tower_firmware"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2021-51","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20137"},{"url":"https://github.com/advisories/GHSA-3m6f-2h66-fxv5"}],"sources":{"cve":[{"id":"CVE-2021-20137","description":"A reflected cross-site scripting vulnerability exists in the url parameter of the /cgi-bin/luci/site_access/ page on the Gryphon Tower router's web interface. An attacker could exploit this issue by tricking a user into following a specially crafted link, granting the attacker javascript execution in the context of the victim's browser.","status":"published","published":"2021-12-09T15:24:32Z","modified":"2024-08-03T17:30:07.44Z","updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-7594","description":"A reflected cross-site scripting vulnerability exists in the url parameter of the /cgi-bin/luci/site_access/ page on the Gryphon Tower router's web interface. An attacker could exploit this issue by tricking a user into following a specially crafted link, granting the attacker javascript execution in the context of the victim's browser.","status":"published","published":"2021-12-09T15:24:32Z","modified":"2024-08-03T17:30:07Z","updated_at":"2026-11-03T03:25:09.841069Z"}],"ghsa":[{"id":"GHSA-3m6f-2h66-fxv5","title":"A reflected cross-site scripting vulnerability exists in the url parameter of the /cgi-bin/luci...","description":"A reflected cross-site scripting vulnerability exists in the url parameter of the /cgi-bin/luci/site_access/ page on the Gryphon Tower router's web interface. An attacker could exploit this issue by tricking a user into following a specially crafted link, granting the attacker javascript execution in the context of the victim's browser.","status":"published","published":"2021-12-10T00:00:45Z","modified":"2023-02-01T05:07:03Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:50:28.399252Z"}],"nvd":[{"id":"CVE-2021-20137","description":"A reflected cross-site scripting vulnerability exists in the url parameter of the /cgi-bin/luci/site_access/ page on the Gryphon Tower router's web interface. An attacker could exploit this issue by tricking a user into following a specially crafted link, granting the attacker javascript execution in the context of the victim's browser.","status":"published","published":"2021-12-09T16:15:07.753Z","modified":"2026-06-17T03:33:20.15Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:02.189991Z"}]}}