{"id":"CVE-2023-4599","aliases":["EUVD-2023-54452","GHSA-76p2-85pf-cqf5"],"status":"published","title":"Email Encoder \u003c= 2.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode","description":"The Email Encoder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'eeb_mailto' shortcode in versions up to, and including, 2.1.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. A partial patch was issued in version 2.1.8. The vulnerability was fully patched in 2.1.9.","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":0.00519,"percentile":0.44415,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2023-08-30T01:45:37Z","modified":"2026-06-17T06:38:11Z","products":[{"vendor":"onlineoptimisation","product":"email encoder – protect email addresses and phone numbers"},{"vendor":"wp-webhooks","product":"email_encoder"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/e90f04e4-eb4c-4822-89c6-79f553987c37?source=cve","tags":["x_transferred","Third Party Advisory"]},{"url":"https://plugins.trac.wordpress.org/browser/email-encoder-bundle/tags/2.1.7/core/includes/classes/class-email-encoder-bundle-run.php#L529","tags":["x_transferred","Product"]},{"url":"https://plugins.trac.wordpress.org/changeset/2958823/email-encoder-bundle#file60","tags":["x_transferred","Product"]},{"url":"https://plugins.trac.wordpress.org/changeset/2994384/email-encoder-bundle/trunk?contextall=1\u0026old=2958823\u0026old_path=%2Femail-encoder-bundle%2Ftrunk#file0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-4599"},{"url":"https://github.com/advisories/GHSA-76p2-85pf-cqf5"}],"sources":{"cve":[{"id":"CVE-2023-4599","title":"Email Encoder \u003c= 2.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode","description":"The Email Encoder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'eeb_mailto' shortcode in versions up to, and including, 2.1.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. A partial patch was issued in version 2.1.8. The vulnerability was fully patched in 2.1.9.","status":"published","published":"2023-08-30T01:45:37.536Z","modified":"2026-04-08T17:30:43.117Z","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":"2026-11-02T14:35:30.474787Z"}],"euvd":[{"id":"EUVD-2023-54452","description":"The Email Encoder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'eeb_mailto' shortcode in versions up to, and including, 2.1.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. A partial patch was issued in version 2.1.8. The vulnerability was fully patched in 2.1.9.","status":"published","published":"2023-08-30T01:45:37Z","modified":"2026-04-08T17:30:43Z","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":"2026-11-02T19:24:35.429442Z"}],"ghsa":[{"id":"GHSA-76p2-85pf-cqf5","title":"The Slimstat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ...","description":"The Slimstat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'eeb_mailto' shortcode in versions up to, and including, 2.1.7 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2023-08-30T03:30:14Z","modified":"2026-04-08T21:33:01Z","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":"2026-11-02T15:07:20.927537Z"}],"nvd":[{"id":"CVE-2023-4599","description":"The Email Encoder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'eeb_mailto' shortcode in versions up to, and including, 2.1.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. A partial patch was issued in version 2.1.8. The vulnerability was fully patched in 2.1.9.","status":"published","published":"2023-08-30T02:15:09.87Z","modified":"2026-06-17T06:38:11.4Z","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"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:08:25.025396Z"}]}}