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VulnerabilityPublished

CVE-2026-84750: Ultra Addons for Contact Form 7 (WordPress plugin) · Unrestricted File Upload

Affects Ultra Addons for Contact Form 7 (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium : upgrade to 3.5.51 when convenient.

Data as of 3 Nov 2026, 22:58 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.5.51
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

Upgrade Ultra Addons for Contact Form 7 (WordPress plugin) to 3.5.51.

Affected software

ProductAffectedFixed in
Ultra Addons for Contact Form 7Affected
  • >=3.2.4 <3.5.51
Fixed in
  • 3.5.51

AI-suggested

Upgrade the Ultra Addons for Contact Form 7 plugin to version 3.5.51 or later where this vulnerability is fixed. No other mitigations are specified. Patch status is confirmed by the version range indicating the fix in 3.5.51.

Description

The Ultra Addons for Contact Form 7 WordPress plugin before 3.5.51 does not validate the type or extension of files uploaded through one of its form fields, and stores them at a predictable public path with the attacker-chosen extension intact, allowing unauthenticated users to upload arbitrary files. The PHP handler shipped by default with the Debian and Ubuntu Apache packages maps .phar to PHP alongside .php and .phtml, so on that stack the uploaded file is executed and the issue leads to Remote Code Execution and full site takeover. Where the host routes only .php to the PHP handler, the same file is instead served from the site's own origin with its script intact, leading to Stored Cross-Site Scripting.

References

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