CVE-2026-8351
Received Received - Intake

Stored XSS in RTMKit WordPress Plugin

Publication date: 2026-07-03

Last updated on: 2026-07-03

Assigner: Wordfence

Description
The RTMKit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Advanced Heading widget's 'Background Text' parameter in versions up to, and including, 2.0.7 This is due to insufficient output escaping on the 'background_text_heading' setting in the render() function, which concatenates the value directly into an HTML attribute without applying esc_attr(). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-07-03
Last Modified
2026-07-03
Generated
2026-07-03
AI Q&A
2026-07-03
EPSS Evaluated
N/A
NVD
CVE-2026-8351
EUVD
EUVD-2026-41512

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
rtmkit rtmkit to 2.0.7 (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

The RTMKit plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in its Advanced Heading widget's 'Background Text' parameter in versions up to and including 2.0.7.

This vulnerability occurs because the plugin does not properly escape output on the 'background_text_heading' setting in the render() function, directly inserting user input into an HTML attribute without using the proper escaping function esc_attr().

As a result, authenticated users with contributor-level access or higher can inject malicious scripts that will execute whenever any user views the affected page.

Impact Analysis

This vulnerability allows attackers with contributor-level access or above to inject arbitrary web scripts into pages.

These scripts execute in the browsers of users who visit the injected pages, potentially leading to theft of user data, session hijacking, defacement, or other malicious actions.

Because the attack requires authenticated access, it may be harder to exploit remotely but still poses a significant risk within the site.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-8351. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart