CVE-2026-91765 — SOAP: Unbounded Recursion in Server-Side cleanup_xml_node

CVE-2026-91765

SOAP: Unbounded Recursion in Server-Side cleanup_xml_node PUBLISHED

Description (CNA)

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 the stack and crash the process. The same unbounded recursion exists in the SOAP value decoder and in the WSDL node search helper.

Affected (CNA)

Vendor / product	Versions
PHP Group / PHP	affected 8.2.* before 8.2.34; affected 8.3.* before 8.3.35; affected 8.4.* before 8.4.26; affected 8.5.* before 8.5.11

CWE

CWE-674

References

https://github.com/php/php-src/security/advisories/GHSA-rgrp-mwpx-f6rm

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.