CVE-2026-91011
Medium
Description
The EWWW Image Optimizer WordPress plugin before 8.7.7 does not properly escape image attribute values when it rewrites page output, allowing authenticated users with author-level access and above to inject arbitrary JavaScript that is stored in published content and executes in the browser of any user who later views the affected page.
SeverityMedium
CVSS6.8
Exploit probability—
Product
EWWW Image Optimizer
PublishedSep 17, 2026
First seenSep 17, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- EWWW Image Optimizer8.7.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| EWWW Image Optimizer | v < 8.7.7 | 8.7.7 |
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