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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-7263

32
FAUCET Score

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.

First published: May 10, 2026Last modified: May 11, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.4.0, < 8.4.21CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 8.5.0, < 8.5.6CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.3MEDIUM

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:X/V:X/RE:M/U:Amber

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
LOW
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 9th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

ubuntupatch availablevia ubuntu_usn
Product: php8.1 (jammy)Fixed in: 8.1.2-1ubuntu2.24
ubuntupatch availablevia ubuntu_usn
Product: php8.3 (noble)Fixed in: 8.3.6-0ubuntu0.24.04.9
ubuntupatch availablevia ubuntu_usn
Product: php8.4 (questing)Fixed in: 8.4.11-1ubuntu1.2
ubuntupatch availablevia ubuntu_usn
Product: php8.5 (resolute)Fixed in: 8.5.4-0ubuntu1.1
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

ubuntuUSN-8336-1

PHP vulnerabilities

May 28, 2026

References

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