medium4.8
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…
Impact
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).
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Thenewsletterplugin | Newsletter | before 8.8.5 |