CVE-2026-7263

6.3 mediumEPSS 0.4%

Medium (6.3) in php php. EPSS 0.4% chance of exploitation in the next 30 days.

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

CVSS 4.0

6.3 medium

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/AU:Y/RE:M/U:Amber

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 29% of CVEs (scores of 2026-10-31)
CWEs: CWE-404, CWE-835
Published: 2026-05-10
Modified: 2026-07-24
Record from: the NVD, synced 2026-10-19

Affected

php:php

References

https://github.com/php/php-src/security/advisories/GHSA-4jhr-8w89-j733
https://access.redhat.com/errata/RHSA-2026:22649
https://access.redhat.com/security/cve/CVE-2026-7263
https://bugzilla.redhat.com/show_bug.cgi?id=2468572
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7263.json

Check your stack JSON