XSS in Thenewsletterplugin Newsletter
CVE-2025-3584
The Newsletter WordPress plugin before 8.8.2 does not sanitise and escape some of its Subscription settings, 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).
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (14.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Thenewsletterplugin Newsletter
- Newsletter — versions 0
Weakness classification (CWE)
References
- wpscan.com/vulnerability/76937bdd-7ffa-4b5e-ade1-60da095a03a3/ (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2025-3584?
- CVE-2025-3584 is a medium-severity vulnerability in Thenewsletterplugin Newsletter, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2025-06-03.
- How severe is CVE-2025-3584?
- Medium severity. CVSS v3 base score is 4.8 out of 10.