{"id":"CVE-2004-2363","url":"https://www.cyber-defence.io/tools/cve/CVE-2004-2363","generatedAt":"2026-10-27T17:30:29.895Z","title":"Validate-Before-Canonicalize vulnerability in the checkURI function in functions.inc.php in PHPX 3.0 through 3.2.6 allows remote attackers to conduct cross-site scripting (XSS) attacks via hex-encoded tags, which bypass the check for literal \"<\", \">\",…","description":"Validate-Before-Canonicalize vulnerability in the checkURI function in functions.inc.php in PHPX 3.0 through 3.2.6 allows remote attackers to conduct cross-site scripting (XSS) attacks via hex-encoded tags, which bypass the check for literal \"<\", \">\", \"(\", and \")\" characters, as demonstrated using the limit parameter to forums.php and a variety of other vectors.","published":"2004-12-31T05:00:00.000Z","lastModified":"2026-06-16T22:09:31.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":4.3,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N"},"cwe":[],"affected":["phpx/phpx"],"epss":{"score":0.01849,"percentile":0.7895,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2004-05-05","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":24083,"kind":"exploit","title":"PHPX 3.x - Multiple Cross-Site Scripting Vulnerabilities","url":"https://www.exploit-db.com/exploits/24083","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/php/webapps/24083.txt","file":"exploits/php/webapps/24083.txt","published":"2004-05-05","added":"2004-05-05","updated":"2013-01-13","author":"JeiAr","type":"webapps","platform":"php","port":null,"verified":true,"codes":["CVE-2004-2363","OSVDB-5903"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://www.securityfocus.com/bid/10283/info"}]},"verdict":{"level":"high","text":"A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 1.8%. Treat it as high on anything reachable from the internet."},"changes":[],"references":[{"url":"http://www.phpx.org/project.php?action=view&project_id=1","tags":["Patch","URL Repurposed"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/362230","tags":["Exploit","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/10283","tags":["Exploit","Patch"],"source":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/16065","source":"cve@mitre.org"},{"url":"http://www.phpx.org/project.php?action=view&project_id=1","tags":["Patch","URL Repurposed"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/362230","tags":["Exploit","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/10283","tags":["Exploit","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/16065","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2004-2363","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."}