CVE-2026-91011
EWWW Image Optimizer < 8.7.7 - Author+ Stored XSS via Image Class Attribute Backreference Expansion
- State
- Published
- Severity
- 6.8 Medium
- Published
- Sep 17, 2026
- Updated
- Sep 17, 2026
- Reserved
- Sep 14, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.8 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
EWWW Image OptimizerUnknown |
|
References
- https://wpscan.com/vulnerability/334f14d5-f97b-4ec5-9b42-bb0803ae1668/exploitvdb-entrytechnical-description
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