REDHAT-BUG-2468572: High severity PHP PHP vulnerability

Published May 10, 2026
·
Updated

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.

Affected Software

1 affected component
PHP PHP>=8.4.0<8.4.21, >=8.5.0<8.5.6

Event History

May 10, 2026
Data Sourced
via Red Hat·06:01 AM
DescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of REDHAT-BUG-2468572?

The severity of REDHAT-BUG-2468572 is high with a score of 7.

2

How do I fix REDHAT-BUG-2468572?

To fix REDHAT-BUG-2468572, you should update PHP to version 8.4.21 or 8.5.6 or later.

3

What versions of PHP are affected by REDHAT-BUG-2468572?

PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6 are affected by REDHAT-BUG-2468572.

4

What impact does REDHAT-BUG-2468572 have on PHP applications?

REDHAT-BUG-2468572 may cause a denial of service due to an infinite loop during XML document processing.

5

Is there a workaround for REDHAT-BUG-2468572?

There is no official workaround for REDHAT-BUG-2468572; upgrading to the fixed versions is recommended.

Company

Resources

Contact

SecAlerts Pty Ltd.
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QLD 4006, Australia
info@secalerts.co
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