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VulnerabilityPublished Updated

CVE-2026-3300: Everest Forms Pro (WordPress plugin) · Code Injection

Affects Everest Forms Pro (WordPress plugin)Source CVE Database V5

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Not known to be exploited · public detection template (Nuclei) · 39% EPSS · CVSS 9.8 Critical.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
39.1% chance of exploitation in 30 days – higher than 98% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 31 Mar 2026

  2. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

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

    Not in CISA KEV and no source reports exploitation

  4. 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), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
WPEverestEverest Forms ProAffected
  • <=1.9.12
Fixed in–

AI-suggested

Until an official fix is available, it is recommended to disable the "Complex Calculation" feature or avoid using the Calculation Addon to prevent exploitation. Monitoring vendor channels for updates and applying patches promptly once released is critical.

Description

The Everest Forms Pro WordPress plugin up to version 1.9.12 contains a critical remote code execution vulnerability due to improper handling of user input in the Calculation Addon's process_filter() function. User-submitted form field values are concatenated into PHP code and evaluated without proper escaping, allowing unauthenticated attackers to inject and execute arbitrary PHP code via the "Complex Calculation" feature. This vulnerability has a CVSS score of 9.8, indicating a critical severity level. No official patch or remediation information is currently provided.

References

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