CVE-2026-91765

Name	CVE-2026-91765
Description	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-6514-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
php8.2 (PTS)	bookworm	8.2.32-1~deb12u1	vulnerable
	bookworm (security)	8.2.33-1~deb12u1	vulnerable
php8.4 (PTS)	trixie	8.4.24-1~deb13u1	vulnerable
	trixie (security)	8.4.26-1~deb13u1	fixed
	forky, sid	8.4.24-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
php8.2	source	(unstable)	(unfixed)
php8.4	source	trixie	8.4.26-1~deb13u1	DSA-6514-1
php8.4	source	(unstable)	(unfixed)

https://github.com/php/php-src/security/advisories/GHSA-rgrp-mwpx-f6rm
https://github.com/php/php-src/blob/php-8.4.26/NEWS