CVE-2025-49871: WordPress Noptin plugin <= 3.8.7 - Cross Site Scripting (XSS) Vulnerability

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-17 · updated 2026-06-17
Weakness: CWE-79

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Noptin Newsletter Team Noptin newsletter-optin-box allows Stored XSS.This issue affects Noptin: from n/a through <= 3.8.7.

Affected products

Noptin Newsletter Team Noptin: through 3.8.7

References

https://patchstack.com/database/Wordpress/Plugin/newsletter-optin-box/vulnerability/wordpress-noptin-plugin-3-8-7-cross-site-scripting-xss-vulnerability?_s_id=cve

Get alerted when CVE-2025-49871 or the next vulnerability affects your stack