{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-21T22:25:49.044","vulnerabilities":[{"cve":{"id":"CVE-2021-41836","sourceIdentifier":"security@wordfence.com","published":"2021-12-14T16:15:09.147","lastModified":"2024-11-21T06:26:51.183","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"The Fathom Analytics WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and escaping via the $site_id parameter found in the ~/fathom-analytics.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 3.0.4. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled."},{"lang":"es","value":"El plugin Fathom Analytics de WordPress es vulnerable a un ataque de tipo Cross-Site Scripting Almacenado debido a la insuficiente comprobación de entrada y escape por medio del parámetro $site_id encontrado en el archivo ~/fathom-analytics.php que permite a atacantes con acceso de usuario administrativo inyectar scripts web arbitrarios, en versiones hasta la 3.0.4 incluyéndola. Esto afecta a las instalaciones multisitio en las que unfiltered_html está deshabilitado para los administradores, y a los sitios en los que unfiltered_html está deshabilitado"}],"metrics":{"cvssMetricV31":[{"source":"security@wordfence.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","baseScore":4.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":1.7,"impactScore":2.7}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:S/C:N/I:P/A:N","baseScore":3.5,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"SINGLE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE"},"baseSeverity":"LOW","exploitabilityScore":6.8,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}]},"weaknesses":[{"source":"security@wordfence.com","type":"Secondary","description":[{"lang":"en","value":"CWE-79"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:conva:fathom_analytics:*:*:*:*:*:wordpress:*:*","versionEndIncluding":"3.0.4","matchCriteriaId":"78CD5495-7615-47A1-87D4-9542401FBDBE"}]}]}],"references":[{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2641005%40fathom-analytics&new=2641005%40fathom-analytics&sfp_email=&sfph_mail=","source":"security@wordfence.com","tags":["Patch","Third Party Advisory"]},{"url":"https://www.wordfence.com/vulnerability-advisories/#CVE-2021-41836","source":"security@wordfence.com","tags":["Third Party Advisory"]},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2641005%40fathom-analytics&new=2641005%40fathom-analytics&sfp_email=&sfph_mail=","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://www.wordfence.com/vulnerability-advisories/#CVE-2021-41836","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}