CVE-2025-6756 json
Ultra Addons for Contact Form 7 <= 3.5.21 - Authenticated (Contributor+) Stored Cross-Site Scripting via UACF7_CUSTOM_FIELDS Shortcode
published last yr. modified 4mo ago also EUVD-2025-28766
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
Summary
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 accesses an injected page.
Patch / fix
- themefic ultimate_addons_for_contact_form_7 3.5.22
Is CVE-2025-6756 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected products
- themefic Ultra Addons for Contact Form 7
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
plugins.trac.wordpress.org
/changeset/3319449/
patch
-
wordfence.com
/threat-intel/vulnerabilities/id/5b839658-c472-40f0-855f-7201baeb790f?source=cve
third-party-advisory
-
wordpress.org
/plugins/ultimate-addons-for-contact-form-7/#developers
product
-
plugins.trac.wordpress.org
/browser/ultimate-addons-for-contact-form-7/tags/3.5.21/addons/dynamic-text/inc/shortcode.php#L113
product
Sources
- CVE List CVE-2025-6756
- NVD CVE-2025-6756
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.