CVE-2026-90650 MotoPress Hotel Booking <= 6.2.4 - Unauthenticated Stored Cross-Site Scripting via Stripe Webhook Event Object 'id'

Q: What is CVE-2026-90650?

CVE-2026-90650 is a high-severity cross-site scripting vulnerability in jetmonsters MotoPress Hotel Booking, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Q: Is CVE-2026-90650 being exploited?

There is no known exploitation of CVE-2026-90650 in the wild and no public exploit code.

Q: How do I fix CVE-2026-90650?

No fix has been published for CVE-2026-90650 yet. Limit exposure of the affected software until one is available.

High 7.2 Published 15 Sep 2026 Updated 15 Sep 2026

Unauthenticated attackers can inject scripts via forged Stripe webhooks, leading to XSS when admins view payment logs.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-90650?

CVE-2026-90650 is a high-severity cross-site scripting vulnerability in jetmonsters MotoPress Hotel Booking, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The MotoPress Hotel Booking plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Stripe Webhook event object 'id' in all versions up to, and including, 6.2.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The premium Stripe webhook listener only verifies the webhook signature when an optional Stripe signing secret has been configured; because that secret is empty by default, a forged webhook is accepted without cryptographic verification, and the attacker-controlled event object 'id' (e.g. a forged 'refund.created' refund id) is written unescaped into the payment log and later echoed unsanitized when an administrator views the payment. An attacker must know a valid Stripe PaymentIntent ID for an existing payment to route the forged webhook to a payment record. Note: The vulnerable webhook handler (webhook-listener.php) is part of the premium Stripe gateway integration and is not present in the lite plugin directory.

Weakness: CWE-79

Which versions are affected by CVE-2026-90650?

How do I fix CVE-2026-90650?

No fix has been published for CVE-2026-90650 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-2026-90650 being exploited?