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Vulnerability record · CVE-2026-7263 · published 10 May 2026

CVE-2026-7263: Php improper resource shutdown vulnerability

Php · Php

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.

6.3 CVSS 4.0 Medium EPSS 0.63% · top 51.9% CWE-404 · Improper resource shutdownCWE-835 · CWE-835
6.3CVSS 4.0 base score
0.63%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
24 Jul 2026Last modified by NVD

Description

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/php/php-src/security/advisories/GHSA-4jhr-8w89-j733 Vendor Advisory
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

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-7263), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.