{"id":"CVE-2026-91765","title":"cleanup_xml_node() in the SOAP XML parser recurses once per XML nesting level with no depth limit","summary":"cleanup_xml_node() in the SOAP XML parser recurses once per XML nesting level with no depth limit. An unauthenticated attacker can post a SOAP request containing tens of thousands of nested elements to any SoapServer endpoint, exhaust th…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-674","CWE-770"],"vendor":"PHP Group","product":"ext-soap","affected":["ext-soap >= 8.2.* < 8.2.34","ext-soap >= 8.3.* < 8.3.35","ext-soap >= 8.4.* < 8.4.26","ext-soap >= 8.5.* < 8.5.11"],"patched":["hardened_images"],"published":"2026-09-25","updated":"2026-09-29","sourceUpdated":"2026-09-29T21:27:41.130","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-91765","references":[{"url":"https://github.com/php/php-src/security/advisories/GHSA-rgrp-mwpx-f6rm","label":"security@php.net"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91765.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-91765"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541646"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-91765"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91765"},{"url":"https://access.redhat.com/errata/RHSA-2026:70720"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00378,"epssPercentile":0.31583,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-28T12:56:08.183508Z"},"ingestedAt":"2026-09-25T21:19:40.145Z","slug":"CVE-2026-91765","body":"## Overview\n\ncleanup_xml_node() in the SOAP XML parser recurses once per XML nesting level with no depth limit. An unauthenticated attacker can post a SOAP request containing tens of thousands of nested elements to any SoapServer endpoint, exhaust the stack and crash the process. The same unbounded recursion exists in the SOAP value decoder and in the WSDL node search helper.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:70720** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:70720)\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-30 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91765.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}