CVE-2021-36841 YITH Maintenance Mode (WordPress plugin) <= 1.3.7 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability.
Authenticated attackers can inject malicious scripts via the newsletter label parameter, potentially hijacking user sessions or executing code in victim browsers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-36841?
CVE-2021-36841 is a medium-severity cross-site scripting vulnerability in YITH Maintenance Mode (WordPress plugin), published on 27 Sep 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Authenticated Stored Cross-Site Scripting (XSS) vulnerability in YITH Maintenance Mode (WordPress plugin) versions <= 1.3.7, vulnerable parameter &yith_maintenance_newsletter_submit_label. Possible even when unfiltered HTML is disallowed by WordPress configuration.
Weakness: CWE-79
Which versions are affected by CVE-2021-36841?
It affects 1 product.
Products include Yithemes Yith Maintenance Mode.
How do I fix CVE-2021-36841?
No fix has been published for CVE-2021-36841 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-2021-36841 being exploited?
There is no known exploitation of CVE-2021-36841 in the wild and no public exploit code.
Other vulnerabilities in YITH Maintenance Mode (WordPress plugin)
Sources
Also known as GHSA-gj7p-x2rc-x46v.