Is itCheck something

No. CVE-2026-87902

Hackers can take over WordPress sites through a theme flaw

Being used now

Yes. Attackers are using this right now.

Anyone with a WordPress website, including small business sites.

What to do

Update WordPress to the latest version. Check: Dashboard > Updates.

Confirmed in attacksSep 25, 2026
ProductWordPress Core
GitHub repos23
Attack likelihood, next 30 days96%

Attack likelihood is EPSS, a daily estimate from FIRST.org of how likely this bug is to be used in attacks in the next 30 days.

The official description

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.

For your tech helper or AI assistant

A read-only checklist. Paste it into Claude, ChatGPT or a coding agent; it only looks and changes nothing.

Read-only check, change nothing, send nothing anywhere.
Is WordPress Core (CVE-2026-87902) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2026-87902. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.
Download playbook (.md)

Code on GitHub

Repos named after this bug. Some are scanners or write-ups, some are working attack code. Do not run them on a machine you care about.

Sources