CVE-2026-116522: fallo de gravedad alta en comesio Relevanssi – A Better Search
Relevanssi <= 4.28.5 - Unauthenticated Stored Cross-Site Scripting via Comment Content via Late Entity Decode
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.2epss 0.2%
The Relevanssi – A Better Search plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 4.28.5 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 requires the site to have both the comment indexing and comment highlighting options enabled, and the payload only fires when a visitor reaches a singular page via a Relevanssi search-result permalink carrying the highlight query parameter.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Productos afectados
comesio · Relevanssi – A Better SearchCVEs relacionadas — comesio Relevanssi – A Better Search
En el mismo producto, de las más peligrosas a las menos.
CVE-2024-1380MEDIUMRelevanssi – A Better Search <= 4.22.0 (Free) and <= 2.25.0 (Premium) - Missing Authorization to Unauthenticated Query Log ExportEPSS 50.2%CVE-2025-4396HIGHRelevanssi <= 4.24.4 (Free) and <= 2.27.5 (Premium) - Unauthenticated SQL InjectionEPSS 2.7%CVE-2024-3213MEDIUMRelevanssi – A Better Search <= 4.22.1 - Missing Authorization to Unauthenticated Count Option UpdateEPSS 0.8%CVE-2024-3214MEDIUMRelevanssi – A Better Search <= 4.22.1 - Unauthenticated Second Order CSV InjectionEPSS 0.8%CVE-2024-7630MEDIUMRelevanssi <= 4.22.2 (Free) and <= 2.25.1 (Premium) - Unauthenticated Information ExposureEPSS 0.5%CVE-2026-19985MEDIUMRelevanssi <= 4.28.1 - Reflected Cross-Site ScriptingEPSS 0.5%
Referencias
https://github.com/msaari/relevanssi/commit/b0324957b27e2dfc2aa116c96dcf578fbec9e0e5https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.5/lib/common.php#L1037https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.5/lib/excerpts-highlights.php#L1698https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.5/lib/excerpts-highlights.php#L521https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.5/lib/excerpts-highlights.php#L688https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.5/lib/init.php#L140https://plugins.trac.wordpress.org/changeset?reponame=&new=3767703%40relevanssi%2Ftags%2F4.28.6&old=3761637%40relevanssi%2Ftags%2F4.28.5https://www.wordfence.com/threat-intel/vulnerabilities/id/442403ae-9011-4373-a363-e98e07ec7e9b?source=cve