CVE-2026-87902

WordPress Core: Remote File Inclusion

As of , CVE-2026-87902 in WordPress Core is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch now.

Exploited
Yes: CISA listed it on 25 September 2026
US federal deadline
28 September 20263 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
Forensic triage
Required by CISA under BOD 26-04Agencies must also look for signs that attackers already got in.
EPSS score
0.46Higher than 98% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
Public exploit
1 Exploit-DB entry
Fix
Vendor advice: github.comLinks below, from CISA's entry.

What CISA says to do

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.

CISA's required action

What the flaw is

WordPress Core contains a remote file inclusion vulnerability which could allow an unauthenticated attacker to make page-template resolution include a chosen readable local `.php` file outside the active theme directories, leading to remote code execution.

CISA's 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.

The CVE record's description, from hackerone

CVE published
22 September 2026
Assigned by
hackerone
CVSS
8.1 High (CVSS 3.1, from CISA-ADP)
CWE-98
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.
  4. Exploit-DB published an exploit (EDB-ID 52690).

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

Core: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2026-63030Interpretation ConflictWordPress CorePatch nowForensic triage required by CISA; Metasploit module0.10
CVE-2026-60137SQL InjectionWordPress CorePatch this weekMetasploit module0.06

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