How severe is CVE-2024-6520?

CVE-2024-6520 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-6520 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-6520?

CVE-2024-6520 affects Fluentforms Contact Form. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-6520?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-6520 have an EU (EUVD) identifier?

Yes. CVE-2024-6520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-47601.

When was CVE-2024-6520 published?

CVE-2024-6520 was published on 2024-07-27 and last updated on 2026-06-17.

CVE-2024-6520

CVE-2024-6520 is a medium-severity vulnerability in Fluentforms Contact Form with a CVSS 3.x base score of 4.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-47601
Weakness: CWE-79
Affected product: Fluentforms Contact Form
Published: 2024-07-27
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2024-6520?: 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 severe is CVE-2024-6520?: CVE-2024-6520 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-6520 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-6520?: CVE-2024-6520 affects Fluentforms Contact Form. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-6520?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-6520 have an EU (EUVD) identifier?: Yes. CVE-2024-6520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-47601.
When was CVE-2024-6520 published?: CVE-2024-6520 was published on 2024-07-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fluentforms:contact_form:*:*:*:*:*:wordpress:*:*

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