{"id":"CVE-2023-2023","aliases":["EUVD-2023-33550","GHSA-2h88-qxq3-v97j"],"status":"published","title":"Custom 404 Pro \u003c 3.7.3 - Reflected Cross-Site Scripting","description":"The Custom 404 Pro WordPress plugin before 3.7.3 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting.","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":"2026-11-10","score":0.0171,"percentile":0.77543,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-79"],"published":"2023-05-30T07:49:21Z","modified":"2026-06-17T05:51:13Z","exploits":[{"source":"nuclei","id":"CVE-2023-2023","title":"Custom 404 Pro \u003c 3.7.3 - Cross-Site Scripting","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-2023.yaml"},{"source":"pocgithub","id":"druxter-x/PHP-CVE-2023-2023-2640-POC-Escalation","title":"druxter-x/PHP-CVE-2023-2023-2640-POC-Escalation","date":"2024-02-15","url":"https://github.com/druxter-x/PHP-CVE-2023-2023-2640-POC-Escalation"},{"source":"pocgithub","id":"thatformat/Hvv2023","title":"thatformat/Hvv2023","date":"2023-08-16","url":"https://github.com/thatformat/Hvv2023"}],"products":[{"vendor":"kunal nagar","product":"custom 404 pro"},{"vendor":"kunalnagar","product":"custom_404_pro"},{"vendor":"unknown","product":"custom 404 pro"}],"references":[{"url":"https://wpscan.com/vulnerability/8859843a-a8c2-4f7a-8372-67049d6ea317","tags":["exploit","vdb-entry","technical-description","x_transferred","Exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-2023"},{"url":"https://github.com/advisories/GHSA-2h88-qxq3-v97j"}],"sources":{"cve":[{"id":"CVE-2023-2023","title":"Custom 404 Pro \u003c 3.7.3 - Reflected Cross-Site Scripting","description":"The Custom 404 Pro WordPress plugin before 3.7.3 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting.","status":"published","published":"2023-05-30T07:49:21.025Z","modified":"2025-01-09T18:53:08.268Z","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":"adp"}],"updated_at":"2026-11-02T14:35:24.004321Z"}],"euvd":[{"id":"EUVD-2023-33550","description":"The Custom 404 Pro WordPress plugin before 3.7.3 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting.","status":"published","published":"2023-05-30T07:49:21Z","modified":"2025-01-09T18:53:08Z","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":"2026-11-03T00:04:22.603579Z"}],"ghsa":[{"id":"GHSA-2h88-qxq3-v97j","title":"The Custom 404 Pro WordPress plugin before 3.7.3 does not escape some URLs before outputting them...","description":"The Custom 404 Pro WordPress plugin before 3.7.3 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting.","status":"published","published":"2023-05-30T09:30:19Z","modified":"2024-04-04T04:23:09Z","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"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:56:23.412856Z"}],"nvd":[{"id":"CVE-2023-2023","description":"The Custom 404 Pro WordPress plugin before 3.7.3 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting.","status":"published","published":"2023-05-30T08:15:09.787Z","modified":"2026-06-17T05:51:13.063Z","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":"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":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:08:03.795015Z"}]}}