{"id":"CVE-2020-21054","aliases":["EUVD-2020-13833","GHSA-6p53-6566-mqvv"],"status":"published","title":"Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.7 allows remote malicious users to...","description":"Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.7 allows remote malicious users to inject arbitrary web script or HTML via an unsanitized \"f\" variable in app\\vars\\vars_textarea.php.","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":0.00723,"percentile":0.54311,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-05-20T15:31:43Z","modified":"2026-10-20T10:52:09Z","products":[{"vendor":"fusionpbx","product":"fusionpbx"}],"references":[{"url":"https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-xss-21/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/fusionpbx/fusionpbx/commit/2489004c7b7e0b14e21cd86cedaab87fed209415","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-21054"},{"url":"https://github.com/advisories/GHSA-6p53-6566-mqvv"}],"sources":{"cve":[{"id":"CVE-2020-21054","description":"Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.7 allows remote malicious users to inject arbitrary web script or HTML via an unsanitized \"f\" variable in app\\vars\\vars_textarea.php.","status":"published","published":"2021-05-20T15:31:43Z","modified":"2024-08-04T14:22:25.476Z","updated_at":"2026-11-02T14:35:48.854892Z"}],"euvd":[{"id":"EUVD-2020-13833","description":"Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.7 allows remote malicious users to inject arbitrary web script or HTML via an unsanitized \"f\" variable in app\\vars\\vars_textarea.php.","status":"published","published":"2021-05-20T15:31:43Z","modified":"2024-08-04T14:22:25Z","updated_at":"2026-11-03T03:07:23.734565Z"}],"ghsa":[{"id":"GHSA-6p53-6566-mqvv","title":"Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.7 allows remote malicious users to...","description":"Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.7 allows remote malicious users to inject arbitrary web script or HTML via an unsanitized \"f\" variable in app\\vars\\vars_textarea.php.","status":"published","published":"2022-05-24T19:02:51Z","modified":"2023-01-29T05:06:44Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:05.419939Z"}],"nvd":[{"id":"CVE-2020-21054","description":"Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.7 allows remote malicious users to inject arbitrary web script or HTML via an unsanitized \"f\" variable in app\\vars\\vars_textarea.php.","status":"published","published":"2021-05-20T16:15:07.767Z","modified":"2026-06-17T03:03:31.64Z","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":"2026-11-02T14:06:39.25999Z"}],"osv":[{"id":"CVE-2020-21054","description":"Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.7 allows remote malicious users to inject arbitrary web script or HTML via an unsanitized \"f\" variable in app\\vars\\vars_textarea.php.","status":"published","published":"2021-05-20T16:15:07.767Z","modified":"2026-10-20T10:52:09.172217027Z","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"}],"updated_at":"2026-11-02T15:44:15.212689Z"}]}}