CVE-2026-1943 YayMail <= 4.3.2 - Authenticated (Shop Manager+) Stored Cross-Site Scripting via Template Elements
Authenticated Shop Managers can inject arbitrary scripts via template elements in YayMail, affecting multi-site or specific configurations.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-1943?
CVE-2026-1943 is a medium-severity cross-site scripting vulnerability in yaycommerce YayMail – WooCommerce Email Customizer, published on 18 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The YayMail – WooCommerce Email Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via settings in all versions up to, and including, 4.3.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Shop Manager-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Weakness: CWE-79
Which versions are affected by CVE-2026-1943?
How do I fix CVE-2026-1943?
No fix has been published for CVE-2026-1943 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-2026-1943 being exploited?
There is no known exploitation of CVE-2026-1943 in the wild and no public exploit code.
Sources
Also known as GHSA-gmgx-8hxg-f53q.