CVE-2026-87902
Published 2026-09-22 · Updated 2026-09-28 · Source support@hackerone.com
Summary
CVE-2026-87902 is a high-severity (CVSS 8.1) vulnerability in WordPress Core. CISA added it to the Known Exploited Vulnerabilities catalog on September 25, 2026, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by September 28, 2026. CISA does not currently list it as used in ransomware campaigns. WordPress has 7 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.
All 7 known-exploited WordPress vulnerabilities →Description
An unauthenticated attacker can make `get_page_template()` page-template resolution include a chosen readable local `.php` file outside the active theme directories. If relevant pre-conditions for both the server and the active theme are met, this can lead to RCE.
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: WordPress — Core
Name: WordPress Core Remote File Inclusion Vulnerability
Date added: 2026-09-25 · Due: 2026-09-28
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.