CVE-2026-92826 json
EWWW Image Optimizer <= 8.7.7 - Reflected Cross-Site Scripting via REQUEST_URI Parameter Key
published last mo. modified last mo. also EUVD-2026-91894
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
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 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.
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- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- nosilver4u EWWW Image Optimizer
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/a9295e78-b45d-4738-b14e-1a16d5915920?source=cve
- plugins.trac.wordpress.org /browser/ewww-image-optimizer/tags/8.7.7/bulk.php#L470
- plugins.trac.wordpress.org /browser/ewww-image-optimizer/tags/8.7.7/bulk.php#L462
- plugins.trac.wordpress.org /browser/ewww-image-optimizer/tags/8.7.7/classes/class-base.php#L269
- plugins.trac.wordpress.org /browser/ewww-image-optimizer/tags/8.7.7/classes/class-base.php#L305
- plugins.trac.wordpress.org /browser/ewww-image-optimizer/tags/8.7.7/classes/class-base.php#L290
- plugins.trac.wordpress.org /browser/ewww-image-optimizer?rev=3712144
- plugins.trac.wordpress.org /changeset/3712144/ewww-image-optimizer/trunk/classes/class-base.php
Sources
- CVE List CVE-2026-92826
- NVD CVE-2026-92826
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