CVE-2025-3581: Newsletter < 8.8.5 - Admin+ Stored XSS via Widget
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 unfilteredhtml capability is disallowed (for example in multisite setup).
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-3581?
CVE-2025-3581 has been rated as a high severity vulnerability due to the potential for Stored Cross-Site Scripting attacks.
How do I fix CVE-2025-3581?
To fix CVE-2025-3581, upgrade the Newsletter WordPress plugin to version 8.8.5 or later.
Who is affected by CVE-2025-3581?
CVE-2025-3581 affects users of the Newsletter WordPress plugin versions prior to 8.8.5.
What type of vulnerability is CVE-2025-3581?
CVE-2025-3581 is classified as a Stored Cross-Site Scripting (XSS) vulnerability.
Can high privilege users exploit CVE-2025-3581?
Yes, high privilege users such as admins can exploit CVE-2025-3581 to perform Stored Cross-Site Scripting attacks.