{"id":"CVE-2026-18988","aliases":["EUVD-2026-54727","GHSA-fqqc-xqw4-9v56"],"status":"published","title":"Easy Accordion \u003c= 3.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'accordionTitleTag' Block Attribute","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.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00349,"percentile":0.28902,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-08-08T04:25:41Z","modified":"2026-08-12T21:00:52Z","products":[{"vendor":"shapedplugin","product":"easy accordion – ai-powered faq \u0026 accordion blocks, product faq"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/6a8a5b2b-6cb0-48bf-ba03-d23b1624390d?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/easy-accordion-free/tags/3.1.2/Blocks/Includes/Render_Blocks_Template.php#L100"},{"url":"https://plugins.trac.wordpress.org/browser/easy-accordion-free/tags/3.1.2/Blocks/Includes/Render_Blocks_Template.php#L126"},{"url":"https://plugins.trac.wordpress.org/browser/easy-accordion-free/tags/3.1.2/Blocks/Includes/Render_Blocks_Template.php#L89"},{"url":"https://plugins.trac.wordpress.org/browser/easy-accordion-free/tags/3.1.2/Blocks/Includes/block-attributes.php#L32"},{"url":"https://plugins.trac.wordpress.org/changeset/3637700/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18988"},{"url":"https://plugins.trac.wordpress.org/changeset/3637700"},{"url":"https://github.com/advisories/GHSA-fqqc-xqw4-9v56"}],"sources":{"cve":[{"id":"CVE-2026-18988","title":"Easy Accordion \u003c= 3.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'accordionTitleTag' Block Attribute","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.","status":"published","published":"2026-08-08T04:25:41.799Z","modified":"2026-08-12T15:03:01.758Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:12.260247Z"}],"euvd":[{"id":"EUVD-2026-54727","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.","status":"published","published":"2026-08-08T04:25:41Z","modified":"2026-08-12T15:03:01Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T18:01:58.302106Z"}],"ghsa":[{"id":"GHSA-fqqc-xqw4-9v56","title":"The Easy Accordion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ...","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.","status":"published","published":"2026-08-08T06:30:21Z","modified":"2026-08-08T06:30:26Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:10:12.306859Z"}],"nvd":[{"id":"CVE-2026-18988","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.","status":"published","published":"2026-08-08T05:17:06.79Z","modified":"2026-08-12T21:00:52.257Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:35.743275Z"}]}}