7.5

CVE-2026-7263: php_group php Improper Resource Shutdown or Release

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2026-7263DEBIAN-CVE-2026-7263
Published 10-05-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2026-7263 is a high (CVSS 7.5) Improper Resource Shutdown or Release vulnerability in php_group php. EPSS estimates a 0.63% chance of exploitation in the next 30 days, higher than 49.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.63%
0%100%
Low · +0.28 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:10747-1RHSA-2026:22649USN-8336-1

Timeline

  1. 10-05-2026
    PublishedVulnerability first disclosed.
  2. 15-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

7 scores · 4 sources · 2 versions

EPSS trend

Probability

0.63%

Chance of exploitation in the next 30 days

Percentile

49%

Versus all other CVEs

30-day change

+0.28 pp

From 0.35% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.63%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • php8.4< 8.4.21-1~deb13u1 | < 8.4.21-1
Php1 product
  • php≥ 8.4.0, < 8.4.21 | ≥ 8.5.0, < 8.5.6
Php_group1 product
  • php≥ 8.4.*, < 8.4.21 | ≥ 8.5.*, < 8.5.6
Ubuntu1 product
  • php8.5< 8.5.4-0ubuntu1.1

4 vendors · 4 products

References

9 links