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CVE-2026-7263

DoS attack via DOMNode::C14N()

Published: May 10, 2026Updated: Jun 30, 2026 Sources: CVE List NVDCWE-404
7.5HIGH
NVD MITRE
EPSS Score
0.4%
Top 72.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-404CWE-835

Affected Products

php
oss-project·USaka pecl, php language, pear
phpDev Tool
OSS Libraries / generic-library
PHP Group
oss-projectaka pear, php
PHPLibraryLibrary
OSS Libraries

Exploitability

Official Patch Available
Scannable·OpenVAS
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/php/php-src/security/advisories/GHSA-4jhr-8w89-j733
github.com
https://access.redhat.com/errata/RHSA-2026:22649
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-7263
access.redhat.com
and 2 more references View all →
News mentions
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