{"id":"CVE-2023-51540","aliases":["EUVD-2023-56252","GHSA-77pp-vwgv-x2jq"],"status":"published","title":"WordPress Custom 404 Pro Plugin \u003c= 3.10.0 is vulnerable to Cross Site Scripting (XSS)","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kunal Nagar Custom 404 Pro allows Stored XSS.This issue affects Custom 404 Pro: from n/a through 3.10.0.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00351,"percentile":0.28973,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2024-02-01T10:11:41Z","modified":"2026-06-17T06:41:10Z","products":[{"vendor":"kunal nagar","product":"custom 404 pro"},{"vendor":"kunalnagar","product":"custom_404_pro"}],"references":[{"url":"https://patchstack.com/database/vulnerability/custom-404-pro/wordpress-custom-404-pro-plugin-3-10-0-cross-site-scripting-xss-vulnerability?_s_id=cve","tags":["vdb-entry","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-51540"},{"url":"https://github.com/advisories/GHSA-77pp-vwgv-x2jq"}],"sources":{"cve":[{"id":"CVE-2023-51540","title":"WordPress Custom 404 Pro Plugin \u003c= 3.10.0 is vulnerable to Cross Site Scripting (XSS)","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kunal Nagar Custom 404 Pro allows Stored XSS.This issue affects Custom 404 Pro: from n/a through 3.10.0.","status":"published","published":"2024-02-01T10:11:41.783Z","modified":"2026-04-28T16:09:04.237Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:17.48054Z"}],"euvd":[{"id":"EUVD-2023-56252","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kunal Nagar Custom 404 Pro allows Stored XSS.This issue affects Custom 404 Pro: from n/a through 3.10.0.","status":"published","published":"2024-02-01T10:11:41Z","modified":"2026-04-28T16:09:04Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T19:24:01.960949Z"}],"ghsa":[{"id":"GHSA-77pp-vwgv-x2jq","title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')...","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kunal Nagar Custom 404 Pro allows Stored XSS.This issue affects Custom 404 Pro: from n/a through 3.10.0.","status":"published","published":"2024-02-01T12:30:22Z","modified":"2026-04-28T21:34:59Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:07:46.833843Z"}],"nvd":[{"id":"CVE-2023-51540","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kunal Nagar Custom 404 Pro allows Stored XSS.This issue affects Custom 404 Pro: from n/a through 3.10.0.","status":"published","published":"2024-02-01T11:15:10.02Z","modified":"2026-06-17T06:41:10.103Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","level":"high","assessor":"secondary"},{"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"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:09:04.527564Z"}]}}