PatchTheCVECVE-2025-6756: The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the
CVE-2025-6756 is a medium-severity flaw (CVSS 6.4) affecting ultimate addons for contact form 7. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's UACF7_CUSTOM_FIELDS shortcode in all versions up to, and including, 3.5.21 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.4 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 84%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2025-07-01 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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-2025-6756?
ultimate addons for contact form 7: upgrade to 3.5.22. Exact commands for each OS are on this page.
Is CVE-2025-6756 being exploited?
CVE-2025-6756 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-2025-6756 affect?
CVE-2025-6756 affects ultimate addons for contact form 7. Severity is medium (CVSS 6.4). The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's UACF7_CUSTOM_FIELDS shortcode in all versions up to, and including, 3.5.21 due to insufficient input sanitization and out
How urgent is CVE-2025-6756?
Priority 26/100. No elevated risk signals yet.
Software pages
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