CVE-2026-111832

Unrestricted Upload of File with Dangerous Type vulnerability in WP Mailster WP Mailster…

Risk score: 72/100
CVSS: 10.0 v3.1
Exploit chance (30 days): 0.4%
Published: 21 Oct 2026

Open in the live forecast Today's forecast

What to know

What it is: WP Mailster has an Unrestricted Upload of File with Dangerous Type vulnerability, allowing an attacker to upload a web shell to a web server.
Affected: {'products': ['WP Mailster'], 'packages': [], 'versions': ['1.9.1.0 and earlier']}
Fix: Check the linked advisory for a fix, as none is provided in the record.
Exploitation: No known exploitation

Why it is Amber

CVSS 10.0 critical
Remotely exploitable without logging in

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

Original 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.

Last activity 21 Oct 2026. Patch Forecast updates every hour.