CVE-2026-18988
Received Received - Intake

Stored XSS in Easy Accordion WordPress Plugin

Publication date: 2026-08-08

Last updated on: 2026-08-08

Assigner: Wordfence

Description
The Easy Accordion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'accordionTitleTag' block attribute in versions up to, and including, 3.1.8. This is due to insufficient input sanitization and output escaping in the accordion_header_renderer() function, which emits the attacker-supplied tag name using esc_attr() in an HTML tag-name context instead of tag_escape(). 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
2026-08-08
Last Modified
2026-08-08
Generated
2026-08-08
AI Q&A
2026-08-08
EPSS Evaluated
N/A
NVD
CVE-2026-18988
EUVD
EUVD-2026-54727

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
easy_accordion easy_accordion to 3.1.8 (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 Easy Accordion WordPress plugin has a stored cross-site scripting (XSS) vulnerability in versions up to 3.1.8. It occurs because the accordionTitleTag block attribute is not properly sanitized before being used in an HTML tag name. Attackers with contributor-level access or higher can inject malicious scripts into web pages. These scripts execute when users visit the affected pages.

Detection Guidance

Check if the Easy Accordion plugin version 3.1.8 or lower is installed on your WordPress site. Log in to your WordPress dashboard, go to Plugins, and look for Easy Accordion. If present, verify the version number.

Impact Analysis

If exploited, this vulnerability allows attackers to inject malicious scripts into your WordPress site. These scripts can steal user data, hijack sessions, or deface your website. Users visiting compromised pages may have their information compromised or be redirected to malicious sites.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR and HIPAA requirements for protecting user data. If exploited, it may result in unauthorized access to personal or health information, leading to legal penalties, fines, and reputational damage for organizations.

Mitigation Strategies

Update the Easy Accordion plugin to the latest version immediately. If an update is not available, consider disabling or removing the plugin until a patch is released. Ensure your WordPress installation and all plugins are regularly updated.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-18988. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart