CVE-2026-18988

Easy Accordion <= 3.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'accordionTitleTag' Block Attribute

Published Aug 8, 2026 CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Shapedplugin
Shapedplugin easy Accordion – Ai-powered Faq & Accordion Blocks, Product Faq
Wordpress
Wordpress wordpress
Vendors & Products Shapedplugin
Shapedplugin easy Accordion – Ai-powered Faq & Accordion Blocks, Product Faq
Wordpress
Wordpress wordpress
Type Values Removed Values Added
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.
Title Easy Accordion <= 3.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'accordionTitleTag' Block Attribute
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Aug 12, 2026, 3:03 PM
Reserved
Aug 5, 2026, 6:07 PM
Status
Deferred
Published
Aug 8, 2026, 5:17 AM
Modified
Aug 12, 2026, 9:00 PM