{"id":"CVE-2023-30777","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-30777","generatedAt":"2026-11-04T23:32:08.710Z","title":"Reflected Cross-Site Scripting (XSS) vulnerability in WP Engine Advanced Custom Fields Pro, WP Engine Advanced Custom Fields plugins <= 6.1.5 versions.","description":"Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in WP Engine Advanced Custom Fields Pro, WP Engine Advanced Custom Fields plugins <= 6.1.5 versions.","published":"2023-05-10T06:15:19.000Z","lastModified":"2026-06-17T05:55:40.000Z","status":"Modified","sourceIdentifier":"audit@patchstack.com","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":["advancedcustomfields/advanced custom fields"],"epss":{"score":0.39003,"percentile":0.98594,"date":"2026-11-03","history":[{"date":"2026-10-11","score":0.39003,"percentile":0.98563}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 39.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://patchstack.com/articles/reflected-xss-in-advanced-custom-fields-plugins-affecting-2-million-sites?_s_id=cve","tags":["Exploit","Third Party Advisory"],"source":"audit@patchstack.com"},{"url":"https://patchstack.com/database/vulnerability/advanced-custom-fields-pro/wordpress-advanced-custom-fields-pro-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve","tags":["Third Party Advisory"],"source":"audit@patchstack.com"},{"url":"https://patchstack.com/database/vulnerability/advanced-custom-fields/wordpress-advanced-custom-fields-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve","tags":["Third Party Advisory"],"source":"audit@patchstack.com"},{"url":"https://patchstack.com/articles/reflected-xss-in-advanced-custom-fields-plugins-affecting-2-million-sites?_s_id=cve","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://patchstack.com/database/vulnerability/advanced-custom-fields-pro/wordpress-advanced-custom-fields-pro-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://patchstack.com/database/vulnerability/advanced-custom-fields/wordpress-advanced-custom-fields-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-30777","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}