Quick answers
- Is CVE-2026-36720 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-36720 being exploited in the wild.
- How severe is CVE-2026-36720?
- Informational severity, with a CVSS score of 8.8, published 9 June 2026.
- Which products and versions are affected?
- BookCars <= v8.3.
- Is there a fix for CVE-2026-36720?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-36720 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-36720?
- Check whether you run BookCars at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A privilege escalation vulnerability exists in BookCars versions up to and including 8.3 due to insecure permission checks in the user update logic. The application exposes an endpoint at `/api/update-user` (handled by `userController.ts`) that accepts a `type` parameter from the request body without verifying if the requesting user has the authority to change their own role. An authenticated attacker can submit a POST request containing their user ID and a modified 'type' value (e.g., changing it to 'admin'). This allows a low-privileged user to bypass Role-Based Access Control (RBAC) and gain full administrative access to the backend.
Affected products
- BookCars BookCars <= v8.3
Timeline
- 2026-06-09: disclosed: Vulnerability details published on GitHub and NVD
- 2026-06-09: advisory