--- id: CVE-2026-97641 title: >- The Relevanssi – A Better Search plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 4.28.3 due to insufficient input sanitization and output escaping summary: >- The Relevanssi – A Better Search plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 4.28.3 due to insufficient input sanitization and output escaping. This makes it… severity: high cvss: 7.2 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N' cwe: - CWE-79 vendor: comesio product: Relevanssi – A Better Search affected: - relevanssi_a_better_search <= 4.28.3 published: '2026-10-02' updated: '2026-10-02' sourceUpdated: '2026-10-02T13:18:55.613' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97641' references: - url: >- https://github.com/msaari/relevanssi/commit/3dddec3416fbda298e18649127f31557398d10b0 label: security@wordfence.com - url: >- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.3/lib/admin-ajax.php#L492 label: security@wordfence.com - url: >- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.3/lib/excerpts-highlights.php#L216 label: security@wordfence.com - url: >- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.3/lib/excerpts-highlights.php#L421 label: security@wordfence.com - url: >- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.3/lib/excerpts-highlights.php#L883 label: security@wordfence.com - url: >- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.3/lib/indexing.php#L1067 label: security@wordfence.com - url: >- https://www.wordfence.com/threat-intel/vulnerabilities/id/47751ff1-2f22-4335-8e75-7ff1b6214426?source=cve label: security@wordfence.com tags: - nvd - cve.org ingestedAt: '2026-10-02T08:14:06.220Z' --- ## Overview The Relevanssi – A Better Search plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 4.28.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when the administrator has configured a non-empty value for the "Allowable tags in excerpts" setting, such as the default example value of <p><a><strong>, as the prefix-matching regex must have an allowable tag whose name is a prefix of the injected tag name. ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges.