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Vulnerability details

CVE-2026-3300

WPEverest Everest Forms Pro

Everest Forms Pro <= 1.9.12 - Unauthenticated Remote Code Execution via Calculation Field

CVSS 3.1
9.8Critical

Official description

The Everest Forms Pro plugin for WordPress is vulnerable to Remote Code Execution via PHP Code Injection in all versions up to, and including, 1.9.12. This is due to the Calculation Addon's process_filter() function concatenating user-submitted form field values into a PHP code string without proper escaping before passing it to eval(). The sanitize_text_field() function applied to input does not escape single quotes or other PHP code context characters. This makes it possible for unauthenticated attackers to inject and execute arbitrary PHP code on the server by submitting a crafted value in any string-type form field (text, email, URL, select, radio) when a form uses the "Complex Calculation" feature.

CVSS scores

ScoreVersionSourceVector
9.8Critical 3.1 CVEProject cvelistV5 (CNA) (Wordfence) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

VendorProductVersionsSource
WPEverest Everest Forms Pro v ≤ 1.9.12 CVEProject cvelistV5 (CNA)

References and advisories

3
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Details

Published
2026-03-31
Last updated
2026-04-08
State
Published
Assigner (CNA)
Wordfence

Exploit prediction (EPSS)

39.15%
Probability of exploitation in 30 days
98.5%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
Yes
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-94
    Improper Control of Generation of Code ('Code Injection')