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CVE-2026-18988

MEDIUM 6.4 CVSS 3.1
Published
August 8, 2026
Last modified
August 12, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

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.

Affected WordPress components

  • Easy Accordion – AI-Powered FAQ & Accordion Blocks, Product FAQ Plugin · easy-accordion-free
    Confirmed match Active
    Up to and including 3.1.8
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • shapedplugin Easy Accordion – AI-Powered FAQ & Accordion Blocks, Product FAQ — Up to and including 3.1.8

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/easy-accordion-free/tags/3.1.2/Blocks/Includes/Render_Blocks_Template.php#L100
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/easy-accordion-free/tags/3.1.2/Blocks/Includes/Render_Blocks_Template.php#L126
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/easy-accordion-free/tags/3.1.2/Blocks/Includes/Render_Blocks_Template.php#L89
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/easy-accordion-free/tags/3.1.2/Blocks/Includes/block-attributes.php#L32
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3637700/
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/6a8a5b2b-6cb0-48bf-ba03-d23b1624390d?source=cve
  • nvd.nist.gov Official NVD record