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CVE-2026-31816 - Vulnerability Analysis

CriticalCVSS: 9.1

Last Updated: March 11, 2026

Budibase - Authentication Bypass

Published: March 9, 2026Updated: March 11, 2026Remote Exploitable

Overview

Budibase <= 3.31.4 contains an authentication bypass caused by unanchored regex in authorized() middleware matching webhook path patterns in query strings, letting unauthenticated remote attackers access any server-side API endpoint, exploit requires crafted request with webhook pattern in URL.

Severity & Score

Severity: Critical

CVSS Score: 9.1

EPSS Score: 10.3%(Probability of exploitation in next 30 days)

Impact

Unauthenticated remote attackers can bypass all authentication and authorization to access any server-side API endpoint.

Mitigation

Update to a version later than 3.31.4 or latest available version.

References

https://github.com/Budibase/budibase/security/advisories/GHSA-gw94-hprh-4wj8

Social Media Activity(2 posts)

TheHackerWire

@thehackerwire

Mar 9, 2026

🔴 CVE-2026-31816 - Critical (9.1) Budibase is a low code platform for creating internal tools, workflows, and admin panels. In 3.31.4 and earlier, the Budibase server's authorized() middleware that protects every server-side API endpoint can be completely bypassed by appending a w... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-31816/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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TheHackerWire

@thehackerwire

Mar 9, 2026

View original post

Related Resources

Details

CVE ID: CVE-2026-31816
Severity: Critical
CVSS Score: 9.1
Type: broken_authentication
Status: unconfirmed
EPSS: 10.3%
Social Posts: 2

CWE

CWE-74

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Score

10.3%Probability of exploitation in the next 30 days