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CVE-2024-6520: The Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder plugin for WordPress

22
Routine
MEDIUM 4.4UPGRADE

CVE-2024-6520 is a medium-severity flaw (CVSS 4.4) affecting contact form. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 whene

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score4.4 (Medium)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededHigh
User interactionNone
EPSS exploit chance0.3% (top 75%)
CISA exploited listNo
WeaknessCWE-79
Published2024-07-27
Last modified2026-06-17
Publisher (CNA): Wordfence · Vendor: fluentforms

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

fluentforms contact form UPGRADE
Affected: < 5.1.20
Fixed in: 5.1.20
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy contact-form || rpm -q contact-form || contact-form --version
2. UPGRADE to 5.1.20 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade contact-form
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade contact-form
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-6520?

contact form: upgrade to 5.1.20. Exact commands for each OS are on this page.

Is CVE-2024-6520 being exploited?

CVE-2024-6520 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-6520 affect?

CVE-2024-6520 affects contact form. Severity is medium (CVSS 4.4). 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 insuffi

How urgent is CVE-2024-6520?

Priority 22/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

References

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