{"id":"CVE-2026-4278","aliases":["EUVD-2026-16098","GHSA-8gh3-66fr-4rwm"],"status":"published","title":"Simple Download Counter \u003c= 2.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'text' Shortcode Attribute","description":"The Simple Download Counter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sdc_menu' shortcode in all versions up to, and including, 2.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes, specifically the 'text' and 'cat' attributes. The 'text' attribute is output directly into HTML content on line 159 without any escaping (e.g., esc_html()). The 'cat' attribute is used unescaped in HTML class attributes on lines 135 and 157 without esc_attr(). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00243,"percentile":0.15624,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-03-26T03:37:29Z","modified":"2026-06-17T10:56:20Z","products":[{"vendor":"specialk","product":"simple download counter"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/f23dec73-9031-4829-a84b-4979c8e8ded4?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-shortcode.php#L159"},{"url":"https://plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functions-shortcode.php#L159"},{"url":"https://plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-shortcode.php#L135"},{"url":"https://plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functions-shortcode.php#L135"},{"url":"https://plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-shortcode.php#L157"},{"url":"https://plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functions-shortcode.php#L157"},{"url":"https://plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-shortcode.php#L92"},{"url":"https://plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functions-shortcode.php#L92"},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3487364%40simple-download-counter\u0026new=3487364%40simple-download-counter\u0026sfp_email=\u0026sfph_mail="},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4278"},{"url":"https://github.com/advisories/GHSA-8gh3-66fr-4rwm"}],"sources":{"cve":[{"id":"CVE-2026-4278","title":"Simple Download Counter \u003c= 2.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'text' Shortcode Attribute","description":"The Simple Download Counter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sdc_menu' shortcode in all versions up to, and including, 2.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes, specifically the 'text' and 'cat' attributes. The 'text' attribute is output directly into HTML content on line 159 without any escaping (e.g., esc_html()). The 'cat' attribute is used unescaped in HTML class attributes on lines 135 and 157 without esc_attr(). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2026-03-26T03:37:29.245Z","modified":"2026-04-08T17:32:37.077Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:19:58.944663Z"}],"euvd":[{"id":"EUVD-2026-16098","description":"The Simple Download Counter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sdc_menu' shortcode in all versions up to, and including, 2.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes, specifically the 'text' and 'cat' attributes. The 'text' attribute is output directly into HTML content on line 159 without any escaping (e.g., esc_html()). The 'cat' attribute is used unescaped in HTML class attributes on lines 135 and 157 without esc_attr(). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2026-03-26T03:37:29Z","modified":"2026-04-08T17:32:37Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:33.901341Z"}],"ghsa":[{"id":"GHSA-8gh3-66fr-4rwm","title":"The Simple Download Counter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via...","description":"The Simple Download Counter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sdc_menu' shortcode in all versions up to, and including, 2.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes, specifically the 'text' and 'cat' attributes. The 'text' attribute is output directly into HTML content on line 159 without any escaping (e.g., esc_html()). The 'cat' attribute is used unescaped in HTML class attributes on lines 135 and 157 without esc_attr(). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2026-03-26T06:30:21Z","modified":"2026-03-26T06:30:27Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:06:52.37988Z"}],"nvd":[{"id":"CVE-2026-4278","description":"The Simple Download Counter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sdc_menu' shortcode in all versions up to, and including, 2.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes, specifically the 'text' and 'cat' attributes. The 'text' attribute is output directly into HTML content on line 159 without any escaping (e.g., esc_html()). The 'cat' attribute is used unescaped in HTML class attributes on lines 135 and 157 without esc_attr(). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2026-03-26T05:16:39.917Z","modified":"2026-06-17T10:56:20.95Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:11.678711Z"}]}}