CVE-2021-28975 Cross-site scripting in n/a
Cross-site scripting in WP Mailster allows attackers to execute arbitrary scripts when victims view crafted server details.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-28975?
CVE-2021-28975 is a medium-severity cross-site scripting vulnerability in n/a, published on 21 Oct 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
WP Mailster 1.6.18.0 allows XSS when a victim opens a mail server's details in the mst_servers page, for a crafted server_host, server_name, or connection_parameter parameter.
Weakness: CWE-79
Which versions are affected by CVE-2021-28975?
It affects 1 product.
Products include Wpmailster Wp Mailster.
How do I fix CVE-2021-28975?
No fix has been published for CVE-2021-28975 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-28975 being exploited?
There is no known exploitation of CVE-2021-28975 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2024-53807 WordPress WP Mailster plugin <= 1.8.16.0 - SQL Injection vulnerability
- CVE-2024-53804 WordPress WP Mailster plugin <= 1.8.16.0 - Sensitive Data Exposure vulnerability
- CVE-2024-53805 WordPress WP Mailster plugin <= 1.8.16.0 - Broken Access Control vulnerability
- CVE-2025-24598 WordPress WP Mailster plugin <= 1.8.17.0 - Reflected Cross Site Scripting (XSS) vulnerability
- CVE-2025-24559 WordPress WP Mailster plugin <= 1.8.15.0 - Reflected Cross Site Scripting (XSS) vulnerability
Sources
Also known as GHSA-2rqf-fc8m-jwgp.