Shortcode Execution Vulnerability in Contact Form 7 Plugin for WordPress
CVE-2026-80439

4.8MEDIUM

Key Information:

Vendor

WordPress
Status
Redirection For Contact Form 7
Vendor
CVE Published:
6 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-80439?

The Contact Form 7 plugin for WordPress prior to version 3.2.11 is prone to a vulnerability that allows unauthenticated users to exploit form submissions. By injecting shortcodes into form fields, these users can execute any registered shortcode on the site, gaining access to its output. This could lead to information disclosure or manipulation of content, undermining the integrity of the website and potentially exposing sensitive data.

Affected Version(s)

Redirection for Contact Form 7 2.2.7 < 3.2.11

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-80439 - Proof of Concept

References

https://wpscan.com/vulnerability/96562897-f18c-45d3-9f31-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jakub Herman
WPScan
.