What is CVE-2026-7263?

CVE-2026-7263 is a high-severity vulnerability in Php, classified under Improper Resource Shutdown or Release. CVSS score: 7.5/10. Published 2026-05-10.

How severe is CVE-2026-7263?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Php

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 processi…

EPSS: 0.001 (19.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Php
Php Group — versions 8.4.*, 8.5.*

Weakness classification (CWE)

CWE-404 — Improper Resource Shutdown or Release
CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

security@php.net (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-7263?: CVE-2026-7263 is a high-severity vulnerability in Php, classified under Improper Resource Shutdown or Release. CVSS score: 7.5/10. Published 2026-05-10.
How severe is CVE-2026-7263?: High severity. CVSS v3 base score is 7.5 out of 10.