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CVE-2026-18781highobserved exploitationCWE-94

Drag and Drop Multiple File Upload for Contact Form 7 < 1.3.9.9 - Unauthenticated RCE via Control Character Filename Bypass

63Vexday Risk Score

Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.

ssvc Actcvss 8.1epss 0.3%
from disclosure to weapon
Published on NVDAug 21
VulnCheck+3d
exploitation probability
0.3%top 76% of all CVEs
observed exploitation
yesVulnCheck
1 public exploit(s)
The Drag and Drop Multiple File Upload for Contact Form 7 WordPress plugin before 1.3.9.9 does not validate the final name of an uploaded file after stripping characters from it, allowing unauthenticated users to defeat its file type restrictions and execute arbitrary code on the server.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.