CVE-2026-87888 YayPricing < 3.5.7 - Subscriber+ Stored XSS via save_page_data REST Route
Subscribers can inject JavaScript via a REST route that executes in admin browsers, potentially leading to account takeover.
- 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-2026-87888?
CVE-2026-87888 is a high-severity cross-site scripting vulnerability in Unknown YayPricing, published on 12 Sep 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
The YayPricing WordPress plugin before 3.5.7 does not perform an authorization check on a REST route that saves its pricing rules, allowing users with the subscriber role and above to store JavaScript that executes in the browser of an administrator who opens the YayPricing WordPress plugin before 3.5.7's settings page.
Weakness: CWE-79
Which versions are affected by CVE-2026-87888?
How do I fix CVE-2026-87888?
No fix has been published for CVE-2026-87888 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-2026-87888 being exploited?
There is no known exploitation of CVE-2026-87888 in the wild and no public exploit code.
Sources
Also known as GHSA-7hp7-3c46-m2c9.