{"id":"CVE-2026-2422","aliases":["EUVD-2026-83549","GHSA-mpx2-87r3-w97m"],"status":"published","title":"WP Composer \u003c= 1.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'pbwp_raw_shortcode' Shortcode","description":"The WP Composer – The Easiest Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pbwp_raw_shortcode' shortcode in all versions up to, and including, 1.0.5. This is due to the shortcode handler decoding Base64-encoded content and outputting it directly without any sanitization or escaping. 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. The Base64 encoding allows the payload to bypass WordPress's KSES content filtering at save time, since the encoded string contains no harmful HTML characters.","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":"2026-11-09","score":0.00356,"percentile":0.29551,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-09-19T07:43:17Z","modified":"2026-09-21T13:33:33Z","products":[{"vendor":"ghozylab","product":"wp composer – the easiest page builder"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/7e328f1d-687d-424f-aab7-343bcece90cd?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/page-builder-wp/tags/1.0.5/inc/global/wpc-helpers.php#L3578"},{"url":"https://plugins.trac.wordpress.org/browser/page-builder-wp/trunk/inc/global/wpc-helpers.php#L3578"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3482357%40page-builder-wp\u0026new=3482357%40page-builder-wp"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2422"},{"url":"https://github.com/advisories/GHSA-mpx2-87r3-w97m"}],"sources":{"cve":[{"id":"CVE-2026-2422","title":"WP Composer \u003c= 1.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'pbwp_raw_shortcode' Shortcode","description":"The WP Composer – The Easiest Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pbwp_raw_shortcode' shortcode in all versions up to, and including, 1.0.5. This is due to the shortcode handler decoding Base64-encoded content and outputting it directly without any sanitization or escaping. 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. The Base64 encoding allows the payload to bypass WordPress's KSES content filtering at save time, since the encoded string contains no harmful HTML characters.","status":"published","published":"2026-09-19T07:43:17.436Z","modified":"2026-09-19T14:01:22.841Z","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":"2026-11-02T13:48:35.749498Z"}],"euvd":[{"id":"EUVD-2026-83549","description":"The WP Composer – The Easiest Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pbwp_raw_shortcode' shortcode in all versions up to, and including, 1.0.5. This is due to the shortcode handler decoding Base64-encoded content and outputting it directly without any sanitization or escaping. 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. The Base64 encoding allows the payload to bypass WordPress's KSES content filtering at save time, since the encoded string contains no harmful HTML characters.","status":"published","published":"2026-09-19T07:43:17Z","modified":"2026-09-19T14:01:22Z","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":"2026-11-02T17:28:06.658724Z"}],"ghsa":[{"id":"GHSA-mpx2-87r3-w97m","title":"The WP Composer – The Easiest Page Builder plugin for WordPress is vulnerable to Stored Cross...","description":"The WP Composer – The Easiest Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pbwp_raw_shortcode' shortcode in all versions up to, and including, 1.0.5. This is due to the shortcode handler decoding Base64-encoded content and outputting it directly without any sanitization or escaping. 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. The Base64 encoding allows the payload to bypass WordPress's KSES content filtering at save time, since the encoded string contains no harmful HTML characters.","status":"published","published":"2026-09-19T09:32:11Z","modified":"2026-09-19T09:32:13Z","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":"2026-11-02T15:12:13.368323Z"}],"nvd":[{"id":"CVE-2026-2422","description":"The WP Composer – The Easiest Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pbwp_raw_shortcode' shortcode in all versions up to, and including, 1.0.5. This is due to the shortcode handler decoding Base64-encoded content and outputting it directly without any sanitization or escaping. 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. The Base64 encoding allows the payload to bypass WordPress's KSES content filtering at save time, since the encoded string contains no harmful HTML characters.","status":"published","published":"2026-09-19T08:16:53.747Z","modified":"2026-09-21T13:33:33.387Z","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":"2026-11-02T14:12:50.043898Z"}]}}