CVE-2026-8893 Cross-site scripting in Express Payment For Stripe
Authenticated attackers with contributor access can inject arbitrary scripts via shortcode attributes, leading to code execution in victim browsers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8893?
CVE-2026-8893 is a medium-severity cross-site scripting vulnerability in payaddons Express Payment For Stripe, published on 5 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Express Payment For Stripe plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'type' attribute of the [stripe-express] shortcode in versions up to, and including, 1.28.0. This is due to insufficient input sanitization and output escaping on the shortcode attribute value, which is concatenated into an HTML attribute in the rendered output of the register_shortcode() function without being passed through esc_attr() or any other escaping function. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2026-8893?
How do I fix CVE-2026-8893?
No fix has been published for CVE-2026-8893 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-2026-8893 being exploited?
There is no known exploitation of CVE-2026-8893 in the wild and no public exploit code.
Sources
Also known as GHSA-2mcq-gv8w-446w.