{"id":"UBUNTU-CVE-2026-7263","details":"In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, DOMNode::C14N() method may process the XML data incorrectly, causing a circular linked list in the data structure representing the XML document. This may cause subsequent processing of the XML document to enter infinite loop, causing denial of service in the processing application.","modified":"2026-06-30T18:17:14.006153798Z","published":"2026-05-10T06:16:00Z","related":["USN-8336-1"],"upstream":["CVE-2026-7263"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-7263"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-7263"},{"type":"REPORT","url":"https://github.com/php/php-src/security/advisories/GHSA-4jhr-8w89-j733"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8336-1"}],"affected":[{"package":{"name":"php8.5","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/php8.5?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.5.4-0ubuntu1.1"}]}],"versions":["8.5.2-0ubuntu1","8.5.4-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"libapache2-mod-php8.5"},{"binary_name":"libphp8.5-embed","binary_version":"8.5.4-0ubuntu1.1"},{"binary_name":"php8.5","binary_version":"8.5.4-0ubuntu1.1"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-bcmath"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-bz2"},{"binary_name":"php8.5-cgi","binary_version":"8.5.4-0ubuntu1.1"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-cli"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-common"},{"binary_name":"php8.5-curl","binary_version":"8.5.4-0ubuntu1.1"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-dba"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-enchant"},{"binary_name":"php8.5-fpm","binary_version":"8.5.4-0ubuntu1.1"},{"binary_name":"php8.5-gd","binary_version":"8.5.4-0ubuntu1.1"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-gmp"},{"binary_name":"php8.5-interbase","binary_version":"8.5.4-0ubuntu1.1"},{"binary_name":"php8.5-intl","binary_version":"8.5.4-0ubuntu1.1"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-ldap"},{"binary_name":"php8.5-litespeed","binary_version":"8.5.4-0ubuntu1.1"},{"binary_name":"php8.5-mbstring","binary_version":"8.5.4-0ubuntu1.1"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-mysql"},{"binary_name":"php8.5-odbc","binary_version":"8.5.4-0ubuntu1.1"},{"binary_name":"php8.5-pgsql","binary_version":"8.5.4-0ubuntu1.1"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-phpdbg"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-readline"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-snmp"},{"binary_name":"php8.5-soap","binary_version":"8.5.4-0ubuntu1.1"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-sqlite3"},{"binary_name":"php8.5-sybase","binary_version":"8.5.4-0ubuntu1.1"},{"binary_name":"php8.5-tidy","binary_version":"8.5.4-0ubuntu1.1"},{"binary_name":"php8.5-xml","binary_version":"8.5.4-0ubuntu1.1"},{"binary_version":"8.5.4-0ubuntu1.1","binary_name":"php8.5-xsl"},{"binary_name":"php8.5-zip","binary_version":"8.5.4-0ubuntu1.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7263.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/AU:Y/RE:M/U:Amber"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}