CVE-2026-6275

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6275", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-04-14T13:44:26.816Z", "datePublished": "2026-05-29T05:32:35.478Z", "dateUpdated": "2026-05-29T10:07:11.779Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-05-29T05:32:35.478Z"}, "affected": [{"vendor": "statcounter", "product": "StatCounter \u2013 Free Real Time Visitor Stats", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "2.1.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The StatCounter \u2013 Free Real Time Visitor Stats plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.1.1 This is due to insufficient output escaping on the post author's nickname in the statcounter_addToTags() function. The function is hooked to wp_head and fires on every single post page. It retrieves the post author's nickname via the_author_meta() and echoes it directly into a JavaScript double-quoted string context inside a <script> block without applying esc_js() or any equivalent JavaScript-context escaping. This makes it possible for authenticated attackers with Author-level access and above to inject arbitrary web scripts into pages that will execute whenever any user (including unauthenticated visitors) accesses a post authored by the attacker."}], "title": "StatCounter <= 2.1.1 - Authenticated (Author+) Stored Cross-Site Scripting via Author Nickname", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/30e0bf40-7f7b-43e6-8439-6dc00a889344?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/trunk/StatCounter-Wordpress-Plugin.php#L274"}, {"url": "https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/tags/2.1.1/StatCounter-Wordpress-Plugin.php#L274"}, {"url": "https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/trunk/StatCounter-Wordpress-Plugin.php#L266"}, {"url": "https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/tags/2.1.1/StatCounter-Wordpress-Plugin.php#L266"}, {"url": "https://plugins.trac.wordpress.org/changeset?old_path=%2Fofficial-statcounter-plugin-for-wordpress/tags/2.1.1&new_path=%2Fofficial-statcounter-plugin-for-wordpress/tags/2.1.2"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "cweId": "CWE-79", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM"}}], "credits": [{"lang": "en", "type": "finder", "value": "ZAST.AI"}], "timeline": [{"time": "2026-05-28T17:02:14.000Z", "lang": "en", "value": "Disclosed"}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-29T10:02:26.217798Z", "id": "CVE-2026-6275", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-29T10:07:11.779Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "StatCounter \u2013 Free Real Time Visitor Stats", "vendor": "statcounter", "versions": [{"lessThanOrEqual": "2.1.1", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The StatCounter \u2013 Free Real Time Visitor Stats plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.1.1 This is due to insufficient output escaping on the post author's nickname in the statcounter_addToTags() function. The function is hooked to wp_head and fires on every single post page. It retrieves the post author's nickname via the_author_meta() and echoes it directly into a JavaScript double-quoted string context inside a <script> block without applying esc_js() or any equivalent JavaScript-context escaping. This makes it possible for authenticated attackers with Author-level access and above to inject arbitrary web scripts into pages that will execute whenever any user (including unauthenticated visitors) accesses a post authored by the attacker."}, {"lang": "es", "value": "El plugin StatCounter \u2013 Free Real Time Visitor Stats para WordPress es vulnerable a cross-site scripting almacenado en versiones hasta, e incluyendo, la 2.1.1. Esto se debe a un escape de salida insuficiente en el apodo del autor de la publicaci\u00f3n en la funci\u00f3n statcounter_addToTags(). La funci\u00f3n est\u00e1 enganchada a wp_head y se activa en cada p\u00e1gina de publicaci\u00f3n individual. Recupera el apodo del autor de la publicaci\u00f3n a trav\u00e9s de the_author_meta() y lo imprime directamente en un contexto de cadena de JavaScript entre comillas dobles dentro de un bloque <script> sin aplicar esc_js() ni ning\u00fan escape equivalente de contexto de JavaScript. Esto hace posible que atacantes autenticados con acceso de nivel de Autor y superior inyecten scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que cualquier usuario (incluidos los visitantes no autenticados) acceda a una publicaci\u00f3n escrita por el atacante."}], "id": "CVE-2026-6275", "lastModified": "2026-07-21T12:10:00.090", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 2.7, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-6275", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-29T10:02:26.217798Z", "version": "2.0.3"}}]}, "published": "2026-05-29T07:16:14.197", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/tags/2.1.1/StatCounter-Wordpress-Plugin.php#L266"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/tags/2.1.1/StatCounter-Wordpress-Plugin.php#L274"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/trunk/StatCounter-Wordpress-Plugin.php#L266"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/trunk/StatCounter-Wordpress-Plugin.php#L274"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset?old_path=%2Fofficial-statcounter-plugin-for-wordpress/tags/2.1.1&new_path=%2Fofficial-statcounter-plugin-for-wordpress/tags/2.1.2"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/30e0bf40-7f7b-43e6-8439-6dc00a889344?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.1.1]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "StatCounter \u2013 Free Real Time Visitor Stats", "source": "cna", "vendor": "statcounter"}, "product": "statcounter_\u2013_free_real_time_visitor_stats", "vendor": "statcounter"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": null}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "wordpress", "vendor": "wordpress"}], "created": "2026-05-29T07:30:35.960898+00:00", "updated": "2026-05-29T08:00:06.896713+00:00", "vendors": ["statcounter", "statcounter$PRODUCT$statcounter_\u2013_free_real_time_visitor_stats", "wordpress", "wordpress$PRODUCT$wordpress"]}