CVE-2026-7263 Details
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.
A denial-of-service vulnerability has been identified in PHP versions 8.4.* prior to 8.4.21 and 8.5.* prior to 8.5.6. The issue arises in the DOMNode::C14N() method, where improper handling of XML data can create a circular linked list in the data structure representing the XML document. This corruption can cause applications processing the XML to enter an infinite loop, leading to resource exhaustion or segmentation faults.
Users can upgrade to PHP versions 8.4.21 or 8.5.6, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 11, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2026:22649 | redhat-SADP | |
| https://access.redhat.com/security/cve/CVE-2026-7263 | redhat-SADP | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2468572 | redhat-SADP | |
| https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7263.json | redhat-SADP | |
| https://github.com/php/php-src/security/advisories/GHSA-4jhr-8w89-j733 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
| CWE-835 | Loop with Unreachable Exit Condition ('Infinite Loop') | redhat-SADP |
| CWE-835 | Loop with Unreachable Exit Condition ('Infinite Loop') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| php php | >= 8.4.0, < 8.4.21 >= 8.5.0, < 8.5.6 |
CPE
Remediation
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Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jul 15, 2026 | CVE Modified | redhat-SADP |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| May 12, 2026 | Initial Analysis | [email protected] |
| May 10, 2026 | New CVE Received | [email protected] |