CVE-2026-65439 HIGH

CVE-2026-65439: WordPress Ultimate Addons for Contact Form 7 plugin <=3.5.45 - Cross Site Scripting (XSS) vulnerability

Vendor Themefic

Product Ultimate Addons for Contact Form 7

Weakness CWE-79 · XSS

Published July 27, 2026

Last update July 28, 2026

View on NVD All CVEs

CVSS base score

7.1/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

What the vulnerability does

01Description

Unauthenticated Cross Site Scripting (XSS) in Ultimate Addons for Contact Form 7 <=3.5.45 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Ultimate Addons for Contact Form 7 versions up to 3.5.45 contain a cross-site scripting (XSS) vulnerability. An attacker can inject malicious scripts that execute in visitors' browsers when they interact with affected form elements. The vulnerability requires user interaction and can affect multiple users across the site. Update to a version newer than 3.5.45 to resolve this issue.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in visitors' browsers when they interact with contact forms.

Potential impact on your site

04Site Impact

Visitors' browsers can be compromised; attackers may steal session cookies, redirect users, or deface form content.

Conditions required to exploit

05Prerequisites

Visitor must click a malicious link or visit a page containing the injected payload; no authentication required.

Key dates

06Disclosure timeline

July 27, 2026 CVE published

July 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-65439 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

Related vulnerabilities

Identifiers

CVE CVE-2026-65439

CWE CWE-79

CVSS 7.1 / HIGH

Affected versions