CVE-2026-66643 WordPress Wufoo Shortcode plugin <= 1.55 - Cross Site Scripting (XSS) vulnerability
A contributor can inject malicious scripts via the Wufoo Shortcode plugin, potentially leading to code execution in the context of other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-66643?
CVE-2026-66643 is a medium-severity cross-site scripting vulnerability in wronganswersonly Wufoo Shortcode, published on 18 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Contributor Cross Site Scripting (XSS) in Wufoo Shortcode <= 1.55 versions.
Weakness: CWE-79
Which versions are affected by CVE-2026-66643?
How do I fix CVE-2026-66643?
No fix has been published for CVE-2026-66643 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-2026-66643 being exploited?
There is no known exploitation of CVE-2026-66643 in the wild and no public exploit code.
Sources
Also known as GHSA-2r6h-jqx8-q38c.