---
id: CVE-2026-92826
title: >-
  The EWWW Image Optimizer plugin for WordPress is vulnerable to Reflected
  Cross-Site Scripting via REQUEST_URI Parameter Key in all versions up to, and
  including, 8.7.7 due to insufficient input sanitization and output escaping
summary: >-
  The EWWW Image Optimizer plugin for WordPress is vulnerable to Reflected
  Cross-Site Scripting via REQUEST_URI Parameter Key in all versions up to, and
  including, 8.7.7 due to insufficient input sanitization and output escaping.
  This make…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: nosilver4u
product: EWWW Image Optimizer
affected:
  - ewww_image_optimizer <= 8.7.7
published: '2026-10-03'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T04:18:04.043'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92826'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/tags/8.7.7/bulk.php#L462
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/tags/8.7.7/bulk.php#L470
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/tags/8.7.7/classes/class-base.php#L269
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/tags/8.7.7/classes/class-base.php#L290
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/tags/8.7.7/classes/class-base.php#L305
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ewww-image-optimizer?rev=3712144
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3712144/ewww-image-optimizer/trunk/classes/class-base.php
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/a9295e78-b45d-4738-b14e-1a16d5915920?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-03T03:38:16.255Z'
---

## Overview

The EWWW Image Optimizer plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via REQUEST_URI Parameter Key in all versions up to, and including, 8.7.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Successful exploitation requires that the enable_help option is active, as the vulnerable HelpScout Beacon script block is only emitted when that setting is enabled.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.