Bug 2544160

Summary:	CVE-2026-91765 php: php: Denial of Service via unbounded recursion in SOAP parser [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Srikanth Balasubramanian <sbalasub>
Component:	php	Assignee:	Remi Collet <fedora>
Status:	MODIFIED ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	fedora, jorton, jplesnik
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["513df502-cb6e-447a-863c-0e3f02c77a6c"]}
Fixed In Version:	php-8.5.12-1.fc46, php-8.5.12-1.fc44	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2541646

Description Srikanth Balasubramanian 2026-09-30 17:40:40 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.

Comment 1 Fedora Update System 2026-10-22 10:38:33 UTC

FEDORA-2026-a9354b8a1e (php-8.5.12-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-a9354b8a1e

Comment 2 Fedora Update System 2026-10-22 10:38:50 UTC

FEDORA-2026-d5f8446449 (php-8.4.27-2.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-d5f8446449