Is wp-mailster (WordPress plugin) vulnerable?

WordPress wp-mailster has 2 known advisories in the phpwarden feed. Feed 2026.10.29.1, updated 2026-10-28.

2advisories

0critical

0on CISA KEV

0no fix recorded

CVE	Title	Severity	CVSS	Affected	Fixed in
CVE-2017-17451	The WP Mailster plugin before 1.5.5 for WordPress has XSS in the unsubscribe handler via the mes parameter to view/subscription/unsubscribe2	medium	6.1	`<1.5.5`	`1.5.5`
CVE-2024-11782	The WP Mailster plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'mst_subscribe' shortcode in all versions	medium	6.4	`<1.8.18`	`1.8.18`

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

Install docs How findings are ranked

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