{"id":"CVE-2026-77830","title":"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 sanit…","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 to, and including, 6.86 due to insufficient input sanit…","severity":"high","cvss":7.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"vendor":"cleantalk","product":"Spam protection, Honeypot, Anti-Spam by CleanTalk","affected":["spam_protection_honeypot_anti-spam_by_cleantalk <= 6.86"],"published":"2026-09-05","updated":"2026-09-08","sourceUpdated":"2026-09-08T15:18:46.693","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77830","references":[{"url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.84/cleantalk.php#L234","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.84/lib/Cleantalk/ApbctWP/ContactsEncoder/ContactsEncoder.php#L114","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.84/lib/Cleantalk/Common/ContactsEncoder/ContactsEncoder.php#L914","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.84/lib/Cleantalk/Common/ContactsEncoder/ContactsEncoder.php#L933","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.85/cleantalk.php#L234","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.85/lib/Cleantalk/ApbctWP/ContactsEncoder/ContactsEncoder.php#L114","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.85/lib/Cleantalk/Common/ContactsEncoder/ContactsEncoder.php#L914","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.85/lib/Cleantalk/Common/ContactsEncoder/ContactsEncoder.php#L933","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset/3677388/cleantalk-spam-protect/trunk/lib/Cleantalk/Common/ContactsEncoder/ContactsEncoder.php","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset?old_path=%2Fcleantalk-spam-protect/tags/6.86&new_path=%2Fcleantalk-spam-protect/tags/6.87","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&new=3677388%40cleantalk-spam-protect%2Ftags%2F6.87&old=3654120%40cleantalk-spam-protect%2Ftags%2F6.86","label":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/10e7000b-597a-4165-8604-cb6b29714abb?source=cve","label":"security@wordfence.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-08T14:46:58.387821Z"},"epss":0.00273,"epssPercentile":0.1986,"ingestedAt":"2026-09-06T03:49:19.850Z","slug":"CVE-2026-77830","body":"## Overview\n\nThe 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":39.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}