{"id":"CVE-2026-6275","state":"PUBLISHED","title":"StatCounter <= 2.1.1 - Authenticated (Author+) Stored Cross-Site Scripting via Author Nickname","description":"The StatCounter – 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.","publishedAt":"2026-05-29T05:32:35.478Z","updatedAt":"2026-05-29T10:07:11.779Z","severity":{"score":6.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","source":"Wordfence"},"assigner":"Wordfence","products":["statcounter StatCounter – Free Real Time Visitor Stats"],"affected":[{"vendor":"statcounter","product":"StatCounter – Free Real Time Visitor Stats","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.1.1","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/30e0bf40-7f7b-43e6-8439-6dc00a889344?source=cve","https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/trunk/StatCounter-Wordpress-Plugin.php#L274","https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/tags/2.1.1/StatCounter-Wordpress-Plugin.php#L274","https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/trunk/StatCounter-Wordpress-Plugin.php#L266","https://plugins.trac.wordpress.org/browser/official-statcounter-plugin-for-wordpress/tags/2.1.1/StatCounter-Wordpress-Plugin.php#L266","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"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/6xxx/CVE-2026-6275.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-6275","state":"PUBLISHED","datePublished":"2026-05-29T05:32:35.478Z","dateUpdated":"2026-05-29T10:07:11.779Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-04-14T13:44:26.816Z"},"containers":{"cna":{"title":"StatCounter <= 2.1.1 - Authenticated (Author+) Stored Cross-Site Scripting via Author Nickname","descriptions":[{"lang":"en","value":"The StatCounter – 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."}],"affected":[{"vendor":"statcounter","product":"StatCounter – Free Real Time Visitor Stats","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.1.1","versionType":"semver"}]}],"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"}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-05-29T05:32:35.478Z"},"credits":[{"lang":"en","type":"finder","value":"ZAST.AI"}],"timeline":[{"time":"2026-05-28T17:02:14.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","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"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-29T10:07:11.779Z"}}]}}}