What is CVE-2025-3581?

CVE-2025-3581 is a medium-severity vulnerability in Thenewsletterplugin Newsletter, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2025-06-09.

How severe is CVE-2025-3581?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Thenewsletterplugin Newsletter

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 Stor…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (12.4th percentile) — read the EPSS interpretation.

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.

Affected products

Thenewsletterplugin Newsletter
Unknown Newsletter — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

contact@wpscan.com (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2025-3581?: CVE-2025-3581 is a medium-severity vulnerability in Thenewsletterplugin Newsletter, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2025-06-09.
How severe is CVE-2025-3581?: Medium severity. CVSS v3 base score is 4.8 out of 10.