vulnerability

WordPress Plugin: fluent-smtp: CVE-2021-24528: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Try Surface Command

Back to search

Severity

CVSS

(AV:N/AC:M/Au:S/C:N/I:P/A:N)

Published

Jul 29, 2021

Added

May 15, 2025

Modified

Apr 30, 2026

Description

The FluentSMTP WordPress plugin before 2.0.1 does not sanitize parameters before storing the settings in the database, nor does the plugin escape the values before outputting them when viewing the SMTP settings set by this plugin, leading to a stored cross site scripting (XSS) vulnerability. Only users with roles capable of managing plugins can modify the plugin's settings.

Solution

fluent-smtp-plugin-cve-2021-24528

References

https://www.cve.org/CVERecord?id=CVE-2021-24528
https://www.wordfence.com/threat-intel/vulnerabilities/id/b99248e9-b34f-4f99-9db1-a4dc2dd45b9c?source=api-prod
https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-11440
CVE-2021-24528
https://attackerkb.com/topics/CVE-2021-24528
CWE-79
EUVD-EUVD-2021-11440

Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.

Get report