SB2026092336 - Unauthenticated remote code execution in WordPress

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Main Vulnerability Database SB2026092336

SB2026092336 - Unauthenticated remote code execution in WordPress

Published: September 23, 2026

Security Bulletin ID SB2026092336
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) PHP file inclusion (CVE-ID: CVE-2026-87902)

CWE-ID: CWE-98 - Improper Control of Filename for Include/Require Statement in PHP Program

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to improper control of the filename for a PHP include statement in get_page_template() page-template resolution when resolving a page template. A remote attacker can cause a chosen readable local PHP file outside the active theme directories to be included to execute arbitrary code.

Exploitation requires an active child or parent theme with a top-level directory whose name begins with "page-" and a chosen local PHP file that is readable by the web server account.


Remediation

Install update from vendor's website.

References