What is CVE-2021-37331?

CVE-2021-37331 is a medium-severity vulnerability in Bookingcore Booking Core, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2021-10-04.

How severe is CVE-2021-37331?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Bookingcore Booking Core

CVE-2021-37331

Laravel Booking System Booking Core 2.0 is vulnerable to Incorrect Access Control. On the Verifications page, after uploading an ID Card or Trade License and viewing it, ID Cards and Trade Licenses of other vendors/users can be viewed by changing the URL.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2021-10-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (60.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Bookingcore Booking Core — versions 2.0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

www.navidkagalwalla.com/booking-core-vulnerabilities (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-37331?: CVE-2021-37331 is a medium-severity vulnerability in Bookingcore Booking Core, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2021-10-04.
How severe is CVE-2021-37331?: Medium severity. CVSS v3 base score is 5.3 out of 10.