CVE-2026-82901 json
Ultra Addons for Contact Form 7 <= 3.5.50 - Unauthenticated Arbitrary File Upload via Signature Form Field
published last mo. modified last mo. also EUVD-2026-87790
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.3%
- EPSS 4.3% chance of exploitation in 30 days, percentile 91%
- public exploits
- 0
- none known
Summary
The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Arbitrary File Upload due to insufficient file type validation in the 'uacf7_wpcf7_mail_components' function in all versions up to, and including, 3.5.50. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. Note: This is only exploitable when the plugin's PDF Generator module is enabled, which is disabled by default.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- last mo.
Exploit prediction
4.33% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- themefic Ultra Addons for Contact Form 7
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/872e1a05-aacc-44fa-93c1-8c3f7b2fb46d?source=cve
- plugins.trac.wordpress.org /browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/signature/ultimate-signature.php#L133
- plugins.trac.wordpress.org /browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/signature/ultimate-signature.php#L192
- plugins.trac.wordpress.org /browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/signature/ultimate-signature.php#L300
- plugins.trac.wordpress.org /browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/pdf-generator/pdf-generator.php#L608
- plugins.trac.wordpress.org /browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/pdf-generator/pdf-generator.php#L807
- plugins.trac.wordpress.org /changeset/3698232/ultimate-addons-for-contact-form-7
Sources
- CVE List CVE-2026-82901
- NVD CVE-2026-82901
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.