Critical · 10.0 CVE-2026-111832 EUVD-2026-107282GHSA-2hrr-86cg-w5v9

WordPress WP Mailster plugin <= 1.9.1.0 - Arbitrary File Upload vulnerability

Published Oct 21, 2026 · Updated Oct 21, 2026 · Assigned by Patchstack

Vendor: WP Mailster Product: WP Mailster

Description

Unrestricted Upload of File with Dangerous Type vulnerability in WP Mailster WP Mailster wp-mailster allows Upload a Web Shell to a Web Server.This issue affects WP Mailster: from n/a through 1.9.1.0.

Affected products

Vendor	Product	Affected	Fixed
WP Mailster	WP Mailster	≤ 1.9.1.0	—

References

https://patchstack.com/database/wordpress/plugin/wp-mailster/vulnerability/wordpress-wp-mailster-plugin-1-9-1-0-arbitrary-file-upload-vulnerability?_s_id=cve vdb-entry