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

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

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Sep 2026
- **Updated:** 15 Sep 2026
- **Also known as:** GHSA-mgqr-689v-35jg

## 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 (Improper Neutralization of Input During Web Page Generation)

## 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.

## Is CVE-2026-90650 being exploited?

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

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-90650 and fix it if it is affected.

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

Affected product: jetmonsters MotoPress Hotel Booking. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-90650/ (Markdown: https://insights.sbomify.com/CVE-2026-90650/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-90650
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-90650
- OSV: https://osv.dev/vulnerability/CVE-2026-90650

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-90650/
Summaries are generated and may contain mistakes; the official description above is the record.