UpHeron
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Servers and applications

CVE-2026-7263

In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, DOMNode::C14N() method may process the XML data incorrectly, causing a circular linked list in the data structure representing the XML document. This may cause subsequent processing of the XML document to enter infinite loop, causing denial of service in the processing application.

Severity
Medium 6.3
Published
10 May 2026
Last changed
24 Jul 2026
Added to UpHeron
14 Oct 2026
Fixed in
8.4.21, 8.5.6
Sources
NVD

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • From 8.4.0 before 8.4.21
  • From 8.5.0 before 8.5.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-7263
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-7263