CVE entry · CVE-2026-87902
CVE-2026-87902: WordPress Core Remote File Inclusion Vulnerability
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.
- Actively exploited: added to CISA’s KEV catalog on September 25, 2026.
- Use by ransomware: not established so far.
- Remediation deadline for US federal agencies: September 28, 2026.
Description from CISA’s KEV catalog.
What to do
- Check whether your estate includes WordPress Core, including internet-facing devices.
- Apply the vendor’s patch or mitigations (references below). Failing that, isolate the product or stop using it, as CISA requires of US federal agencies.
- An exploited vulnerability has often been used before it was fixed: look for signs of compromise, especially on internet-facing devices.