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

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-08-14 · updated 2026-06-17

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.

Affected products

Themefic Ultimate Addons for Contact Form 7: before 3.1.29 — fixed in 3.1.29

How to fix

Upgrade to a fixed version: Themefic Ultimate Addons for Contact Form 7 3.1.29. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/ec640d47-bb22-478d-9668-1dab72f12f8d
https://wpscan.com/vulnerability/ec640d47-bb22-478d-9668-1dab72f12f8d

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