{"id":"CVE-2009-5016","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-5016","generatedAt":"2026-10-27T18:47:47.020Z","title":"Integer overflow in the xml_utf8_decode function in ext/xml/xml.c in PHP before 5.2.11 makes it easier for remote attackers to bypass cross-site scripting (XSS) and SQL injection protection mechanisms via a crafted string that uses overlong UTF-8…","description":"Integer overflow in the xml_utf8_decode function in ext/xml/xml.c in PHP before 5.2.11 makes it easier for remote attackers to bypass cross-site scripting (XSS) and SQL injection protection mechanisms via a crafted string that uses overlong UTF-8 encoding, a different vulnerability than CVE-2010-3870.","published":"2010-11-12T22:00:01.000Z","lastModified":"2026-06-16T23:14:50.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":6.8,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P"},"cwe":["CWE-189"],"affected":["php/php"],"epss":{"score":0.02652,"percentile":0.85542,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.65%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://bugs.php.net/bug.php?id=49687","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052836.html","source":"cve@mitre.org"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052845.html","source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/42410","source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/42812","source":"cve@mitre.org"},{"url":"http://sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.html","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"http://www.blackhat.com/presentations/bh-usa-09/VELANAVA/BHUSA09-VelaNava-FavoriteXSS-SLIDES.pdf","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"http://www.redhat.com/support/errata/RHSA-2010-0919.html","source":"cve@mitre.org"},{"url":"http://www.redhat.com/support/errata/RHSA-2011-0195.html","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/44889","source":"cve@mitre.org"},{"url":"http://www.ubuntu.com/usn/USN-1042-1","source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2010/3081","source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2011/0020","source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2011/0021","source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2011/0077","source":"cve@mitre.org"},{"url":"http://bugs.php.net/bug.php?id=49687","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052836.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052845.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/42410","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/42812","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.html","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.blackhat.com/presentations/bh-usa-09/VELANAVA/BHUSA09-VelaNava-FavoriteXSS-SLIDES.pdf","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.redhat.com/support/errata/RHSA-2010-0919.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.redhat.com/support/errata/RHSA-2011-0195.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/44889","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ubuntu.com/usn/USN-1042-1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2010/3081","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2011/0020","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2011/0021","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2011/0077","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-5016","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."}