CVE-2025-3581
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).
| Software | From | Fixed in |
|---|---|---|
| thenewsletterplugin / newsletter | - | 8.8.5 |
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