CVE-2023-2803 Ultimate Addons for Contact Form 7 < 3.1.29 - Reflected XSS

What is CVE-2023-2803?

CVE-2023-2803 is a medium-severity cross-site scripting vulnerability in Unknown Ultimate Addons for Contact Form 7, published on 14 Aug 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The Ultimate Addons for Contact Form 7 WordPress plugin before 3.1.29 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin.

Which versions are affected by CVE-2023-2803?

It affects 1 product.

Products include Themefic Ultimate Addons for Contact Form 7.

How do I fix CVE-2023-2803?

No fix has been published for CVE-2023-2803 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-2803 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2803 exists.

Other vulnerabilities in Unknown Ultimate Addons for Contact Form 7

• CVE-2023-1615 SQL injection in Ultimate Addons for Contact Form 7 High 8.8
• CVE-2023-30495 WordPress Ultimate Addons for Contact Form 7 Plugin <= 3.1.23 is vulnerable to SQL Injection High 8.5
• CVE-2022-47586 WordPress Ultimate Addons for Contact Form 7 Plugin <= 3.1.23 is vulnerable to SQL Injection High 8.2
• CVE-2025-6212 Ultra Addons for Contact Form 7 3.5.11 - 3.5.19 - Unauthenticated Stored Cross-Site Scripting via Database module High 7.2
• CVE-2025-6220 Ultimate Addons for Contact Form 7 <= 3.5.12 - Authenticated (Administrator+) Arbitrary File Upload via 'save_options' High 7.2

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6mm7-gq6w-gv3f.