Home→Vulnerabilities→CVE-2026-7263
Disclosed

CVE-2026-7263

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.

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Exploitation Probability (EPSS)

Low Priority
0.06%

The Exploit Prediction Scoring System (EPSS) uses machine learning to estimate the probability that a vulnerability will be exploited in the wild within the next 30 days.

0% (Theoretical)100% (Certainty)

7-Day Exploitation Trend

Vulnerability Timeline

2 events
May 10, 2026
Vulnerability Disclosed
Published to component-level vulnerability database.
May 12, 2026
Last Updated
Record updated with new analysis or tags.

Threat Actor Attribution

PREMIUM INTEL
Associated Groups:Lazarus Group, APT28
Ransomware Campaigns:LockBit 3.0, BlackCat
IoCs (Indicators):14 IPs, 3 Hashes

Remediation & Mitigation

SOLUTION

Official patches and mitigation steps are available for this vulnerability.

# Update Command
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name

Affected Products

1 Total
php/phpAll Versions

References

https://github.com/php/php-src/security/advisories/GHSA-4jhr-8w89-j733GitHub
Vendor Advisory

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Check your domain or package.json for CVE-2026-7263 exposure.

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Vulnerability Details

CVSS Base Score
7.5/ 10
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published Date
May 10, 2026
Last Modified
May 12, 2026
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