CVE-2026-42728 HIGH

CVE-2026-42728: WordPress HT Contact Form 7 plugin <= 2.8.2 - Cross Site Scripting (XSS) vulnerability

Vendor Ht Plugins
Product HT Contact Form 7
Weakness CWE-79 · XSS
Published May 27, 2026
Last update May 27, 2026

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

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in HT Plugins HT Contact Form 7 ht-contactform allows Stored XSS.This issue affects HT Contact Form 7: from n/a through <= 2.8.2.

Explanation of Vulnerability in Simple Terms

02Summary

HT Contact Form 7 versions up to 2.8.2 contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. The vulnerability requires user interaction—typically clicking a malicious link—and can affect users across different parts of the site. An attacker with no authentication can craft a payload that executes in victims' browsers, potentially stealing session data or performing actions on their behalf.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in other users' browsers when they visit a crafted link.

Potential impact on your site

04Site Impact

Visitors can be redirected, have sessions hijacked, or have their data stolen via malicious scripts injected through the form.

Conditions required to exploit

05Prerequisites

Victim must click a malicious link or visit an attacker-controlled page; no authentication required.

Key dates

06Disclosure timeline

May 27, 2026 CVE published
May 27, 2026 Record updated

Related vulnerabilities

08Related CVE