CVE-2023-6957: contact form XSS (CVSS 4.9)

Description

The Fluent Forms plugin for WordPress by Fluent Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 5.1.9 due to insufficient input sanitization and output escaping. This makes it possible for attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploitation level depends on who is granted the right to create forms by an administrator. This level can be as low as contributor, but by default is admin.

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CVSS v3.1 Score

4.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
fluentforms	contact_form	< 5.1.10

References

Other References

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3041316%40fluentform%2Ftrunk&old=3025740%40fluentform%2Ftrunk&sfp_email=&sfph_mail= https://www.wordfence.com/threat-intel/vulnerabilities/id/f4050403-6b8c-4023-b170-39f3cb68583e?source=cve https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3041316%40fluentform%2Ftrunk&old=3025740%40fluentform%2Ftrunk&sfp_email=&sfph_mail= https://www.wordfence.com/threat-intel/vulnerabilities/id/f4050403-6b8c-4023-b170-39f3cb68583e?source=cve

Frequently Asked Questions

What is CVE-2023-6957? +

The Fluent Forms plugin for WordPress by Fluent Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 5.1.9 due to insufficient input sanitization and output escaping. This makes it possible for attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploitation level depends on who is granted the right to create forms by an administrator. This level can be as low as contributor, but by default is admin. It has a CVSS v3.1 base score of 4.9 (MEDIUM).

How severe is CVE-2023-6957? +

CVE-2023-6957 has a CVSS v3.1 score of 4.9 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-6957? +

CVE-2023-6957 affects products from fluentforms, specifically: contact_form. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-6957? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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