CVE-2026-92826
EWWW Image Optimizer <= 8.7.7 - Reflected Cross-Site Scripting via REQUEST_URI Parameter Key
- State
- Published
- Severity
- 6.1 Medium
- Published
- Oct 3, 2026
- Updated
- Oct 3, 2026
- Reserved
- Sep 16, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | Wordfence |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
EWWW Image Optimizernosilver4u |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a9295e78-b45d-4738-b14e-1a16d5915920?source=cve
- https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/tags/8.7.7/bulk.php#L470
- https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/tags/8.7.7/bulk.php#L462
- https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/tags/8.7.7/classes/class-base.php#L269
- https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/tags/8.7.7/classes/class-base.php#L305
- https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/tags/8.7.7/classes/class-base.php#L290
- https://plugins.trac.wordpress.org/browser/ewww-image-optimizer?rev=3712144
- https://plugins.trac.wordpress.org/changeset/3712144/ewww-image-optimizer/trunk/classes/class-base.php
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