{"id":"CVE-2026-77830","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-77830","summary":"The Spam protection, Honeypot, Anti-Spam by CleanTalk plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content aria-label Placeholder in all versions up…","details":"The Spam protection, Honeypot, Anti-Spam by CleanTalk plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content aria-label Placeholder in all versions up to, and including, 6.86 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload is deliverable via unauthenticated comment submission and executes exclusively for non-logged-in visitors; if comment moderation is enabled, an approving moderator must first publish the comment before the script reaches other users.","published":"2026-09-05T06:37:55.593Z","modified":"2026-09-05T06:37:55.593Z","cvss":{"score":7.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/10e7000b-597a-4165-8604-cb6b29714abb?source=cve"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.85/lib/Cleantalk/Common/ContactsEncoder/ContactsEncoder.php#L914"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.85/lib/Cleantalk/Common/ContactsEncoder/ContactsEncoder.php#L933"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.85/lib/Cleantalk/ApbctWP/ContactsEncoder/ContactsEncoder.php#L114"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.85/cleantalk.php#L234"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.84/lib/Cleantalk/Common/ContactsEncoder/ContactsEncoder.php#L914"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.84/lib/Cleantalk/Common/ContactsEncoder/ContactsEncoder.php#L933"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.84/lib/Cleantalk/ApbctWP/ContactsEncoder/ContactsEncoder.php#L114"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.84/cleantalk.php#L234"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/changeset?reponame=&new=3677388%40cleantalk-spam-protect%2Ftags%2F6.87&old=3654120%40cleantalk-spam-protect%2Ftags%2F6.86"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/changeset/3677388/cleantalk-spam-protect/trunk/lib/Cleantalk/Common/ContactsEncoder/ContactsEncoder.php"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/changeset?old_path=%2Fcleantalk-spam-protect/tags/6.86&new_path=%2Fcleantalk-spam-protect/tags/6.87"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-05T06:37:55.593Z"}}