CVE-2026-18781
Unauthenticated RCE via file upload bypass in Contact Form 7 drag-and-drop plugin
Is CVE-2026-18781 being exploited?
Not confirmed. CVE-2026-18781 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.32% probability of exploitation in the next 30 days.
How severe is CVE-2026-18781?
CVE-2026-18781 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-18781?
Yes. A fix has been recorded for CVE-2026-18781. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-18781 affect?
CVE-2026-18781 affects Drag and Drop Multiple File Upload for Contact Form 7 (versions < 1.3.9.9), WordPress sites using Contact Form 7 with this add-on. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-18781?
Update to 1.3.9.9+, or remove/disable plugin and scan for webshells
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attackers can bypass filename/type checks, upload malicious files and achieve remote code execution on the web server.
Immediate action required
- affected< 1.3.9.9
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.