{"id":"CVE-2025-11876","title":"The Mailgun Subscriptions plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'mailgun_subscription_form' shortcode in all versions up to, and including, 1.3.1 due to insufficient input sanitization and out…","summary":"The Mailgun Subscriptions plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'mailgun_subscription_form' shortcode in all versions up to, and including, 1.3.1 due to insufficient input sanitization and out…","severity":"medium","cvss":6.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"published":"2025-12-12","updated":"2026-10-07","sourceUpdated":"2026-10-07T20:10:01.970","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-11876","references":[{"url":"https://github.com/flightless/mailgun-subscriptions/pull/8/commits/a8b597e3a09f3a1b76436d09de434fd9bfe29f64","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun-subscriptions/tags/1.2.0/Mailgun_Subscriptions/Subscription_Form.php#L101","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3413662%40mailgun-subscriptions&new=3413662%40mailgun-subscriptions&sfp_email=&sfph_mail=","label":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/149e60cc-9612-4651-b02d-4b68a3533d36?source=cve","label":"security@wordfence.com"}],"tags":["nvd"],"epss":0.00223,"epssPercentile":0.11803,"ingestedAt":"2026-10-07T20:46:46.895Z","slug":"CVE-2025-11876","body":"## Overview\n\nThe Mailgun Subscriptions plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'mailgun_subscription_form' shortcode in all versions up to, and including, 1.3.1 due to insufficient input sanitization and output escaping on user supplied attributes. 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":35.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}