CVE-2026-18781

HighCVSS 8.1/10Last modified Oct 24, 2026

Description

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.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Aug 21, 2026
Last modified
Oct 24, 2026
NVD status
Deferred

Related CVEs from 2026

CVE-2026-187829.8Improper neutralization of special elements used in an SQL command ('SQL injection') vulnerability in Trex Digital Smart Manufacturing SysteCVE-2026-187838.8Missing authentication for critical function vulnerability in Trex Digital Smart Manufacturing Systems Inc. Trex MES allows Authentication BCVE-2026-187845.3A vulnerability was found in o6 open62541 up to 1.5.5. This issue affects the function UA_Client_readNodeClassAttribute of the file src/clieCVE-2026-187855.3A vulnerability was determined in o6 open62541 ca356b088ada7dee824d1b4acd07c1ff07ce242b. Impacted is the function UA_Client_getRemoteDataTypCVE-2026-187868.8The CheckView WordPress plugin before 2.3.2 does not restrict its REST API authentication filter to its own routes and unconditionally discCVE-2026-187878.8A vulnerability was identified in GL.iNet AX1800 up to 4.8.3. The affected element is the function remove_rule of the file /usr/share/gl-ngxCVE-2026-187887.3A security flaw has been discovered in Trippo ResponsiveFilemanager up to 9.14.0. The impacted element is an unknown function of the file fiCVE-2026-187897.5The Ezoic WordPress plugin before 2.23.1 does not properly restrict access to some of its content export functionality, allowing unauthenticCVE-2026-18796.3A vulnerability was detected in Harvard University IQSS Dataverse up to 6.8. This affects an unknown function of the file /ThemeAndWidgets.xCVE-2026-187903.3A weakness has been identified in Systerel S2OPC up to 1.7.3. This affects the function LockedStaMac_ProcessMsg_DeleteMonitoredItemsResponseCVE-2026-187948.2The OpenRGB network protocol allows attackers to cause memory exhaustion and out-of-bounds memory reads and writes by passing inconsistent dCVE-2026-187956.4Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to enforce DM/GM check on server side whic
CVE-2026-18781: High severity, CVSS 8.1 | Vulnix