What is CVE-2026-73303?

CVE-2026-73303 is a high-severity vulnerability in Budibase, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.2/10. Published 2026-08-12.

How severe is CVE-2026-73303?

High severity. CVSS v3 base score is 8.2 out of 10.

Auth bypass in Budibase

CVE-2026-73303

Budibase is an open-source low-code platform. Prior to 3.40.0, POST /api/v2/email on account.budibase.app accepted a client-controlled accountId without binding it to the authenticated session, while checking only currentEmail. An authenti…

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N.

Affected products

Budibase — versions < 3.40.0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-73303?: CVE-2026-73303 is a high-severity vulnerability in Budibase, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.2/10. Published 2026-08-12.
How severe is CVE-2026-73303?: High severity. CVSS v3 base score is 8.2 out of 10.