🛡️ CVE-2024-6520 — contact-form

🟡 CVSS 4.4 — Medium ✅ No Known Exploit CWE-79 NVD
4.4
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

The Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom error message in all versions up to, and including, 5.1.19 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability none.

Weakness class

CVE-2024-6520 is classified as CWE-79: Cross-site Scripting (XSS). User-supplied data is written into a page without escaping, so attacker script runs in the browser of anyone who views it.

Affected software

CVE-2024-6520 is recorded against 1 package.

  • contact-form (fixed in 5.1.20)

Timeline and source

Published on 27 July 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

plugins.trac.wordpress.org
wordpress.org
www.wordfence.com
plugins.trac.wordpress.org
wordpress.org
www.wordfence.com

Details

Severity MEDIUM
CVSS Score 4.4
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
CWE CWE-79
Public Exploit ✅ No
Source NVD
Published 2024-07-27
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
contact-form — 5.1.20

Similar Threats

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