CVE-2025-3581
Medium
Description
The Newsletter WordPress plugin before 8.8.5 does not validate and escape some of its Widget options before outputting them back in a page/post where the block is embed, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
SeverityMedium
CVSS4.8
Exploit probability—
ProductNewsletter
PublishedJun 9, 2025
First seenJun 9, 2025
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- thenewsletterplugin newsletter8.8.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| thenewsletterplugin newsletter | v < 8.8.5 | 8.8.5 |
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