---
id: "CVE-2026-116390"
kind: "vulnerability"
aliases: ["CVE-2026-116390"]
title: "WordPress Filter Everything plugin: object injection flaw through version 1.9.7"
severity: "high"
cvss: 7.2
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "php", "woocommerce", "wordpress"]
not_affected_if: ["plugin-not-installed"]
published_at: "2026-10-28T14:16:58+00:00"
first_seen_at: "2026-10-28T14:33:23+00:00"
updated_at: "2026-10-28T14:34:26+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116390", "first_seen_at": "2026-10-28T14:33:23+00:00"}]
---

# WordPress Filter Everything plugin: object injection flaw through version 1.9.7

The Filter Everything plugin for WordPress and WooCommerce unsafely deserializes untrusted data, which is a PHP object injection flaw. Depending on the available gadget chains on the site, an attacker may be able to run code or change application data.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed plugin version in the WordPress admin under Plugins, or in `wp-content/plugins/filter-everything/` header of the main plugin file.
- Confirm whether the installed version is `1.9.7` or earlier, which the sources list as affected.

## Fix

- Update the Filter Everything plugin to a version later than `1.9.7`; the sources do not name the exact fixed release, so check the plugin's changelog.
- If no patched release is available, deactivate the plugin until it is updated.

## Timeline

- 2026-10-28T14:33:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-116390

## From the sources

Deserialization of Untrusted Data vulnerability in stepasyuk Filter Everything — WordPress & WooCommerce Filters filter-everything allows Object Injection.This issue affects Filter Everything — WordPress & WooCommerce Filters: from n/a through 1.9.7.

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