CVE-2026-86833

Published 7 October 2026 · tracked since 8 October 2026

Description

The MetForm WordPress plugin before 4.3.1 does not sanitize or escape submitted form-field values before inserting them into the HTML body of its email notifications, allowing unauthenticated attackers to inject arbitrary markup into the administrator and submitter notification emails the site sends

References

• NVD — National Vulnerability Database
• CVE.org record (MITRE)
• CISA Known Exploited Vulnerabilities catalog

Latest tracked vulnerabilities

• CVE-2026-107204 CRITICAL 9.8
• CVE-2026-106559 MEDIUM 6.3
• CVE-2026-106560 HIGH 7.1
• CVE-2026-106561 MEDIUM 5
• CVE-2026-106563 MEDIUM 5.3
• CVE-2026-106558 HIGH 8.8
• CVE-2026-106510 HIGH 7.7
• CVE-2026-106556 HIGH 7.7
• CVE-2025-70521 CRITICAL 9.8
• CVE-2025-70518 CRITICAL 10

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