All vulnerabilities

Servers and applications

CVE-2026-91765

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.

Severity
High 7.5
Published
25 Sept 2026
Last changed
23 Oct 2026
Added to UpHeron
24 Oct 2026
Fixed in
8.2.34, 8.3.35, 8.4.26, 8.5.11
Sources
NVD

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • From 8.2.0 before 8.2.34
  • From 8.3.0 before 8.3.35
  • From 8.4.0 before 8.4.26
  • From 8.5.0 before 8.5.11

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-91765
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-91765