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.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| PHP Group | PHP | >= 8.4.*, < 8.4.21; >= 8.5.*, < 8.5.6 |
| Red Hat | Red Hat Enterprise Linux 10 | — |
| Red Hat | Red Hat Enterprise Linux 10 | — |
| Red Hat | Red Hat Enterprise Linux 6 | — |
| Red Hat | Red Hat Enterprise Linux 7 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Hardened Images | — |
References
- https://github.com/php/php-src/security/advisories/GHSA-4jhr-8w89-j733Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:22649
- https://access.redhat.com/security/cve/CVE-2026-7263
- https://bugzilla.redhat.com/show_bug.cgi?id=2468572
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7263.json
Timeline
- Published
- May 10, 2026
- Last modified
- Jul 24, 2026
- NVD status
- Modified