CVE-2026-48147

Published: Mag 27, 2026 Last Modified: Mag 27, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: required
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: none

Description

AI Translation Available

Budibase is an open-source low-code platform. Prior to 3.35.4, the buildMatcherRegex() / matches() functions in packages/backend-core/src/middleware/matchers.ts route patterns are compiled into unanchored regular expressions and tested against ctx.request.url, which includes the full query string. The CSRF middleware in the Budibase Worker uses this matching system to decide whether to skip CSRF token validation. An unauthenticated attacker can forge state-changing cross-origin requests against any Worker API endpoint by injecting a public route pattern into the query string, causing the CSRF middleware to skip token validation entirely. This allows actions such as sending admin invites, modifying global configuration, and managing users without a valid CSRF token. This vulnerability is fixed in 3.35.4.

185

Incorrect Regular Expression

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Other Access Control
Potential Impacts:
Unexpected State Varies By Context Bypass Protection Mechanism
Applicable Platforms
All platforms may be affected
View CWE Details
352

Cross-Site Request Forgery (CSRF)

Stable
Abstraction: Compound Structure: Composite
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Availability Non-Repudiation Access Control
Potential Impacts:
Gain Privileges Or Assume Identity Bypass Protection Mechanism Read Application Data Modify Application Data Dos: Crash, Exit, Or Restart
Applicable Platforms
Technologies: Web Based, Web Server
Likelihood of Exploit: Medium
View CWE Details
https://github.com/Budibase/budibase/security/advisories/GH…
https://github.com/Budibase/budibase/security/advisories/GHSA-wxq7-x3qp-vcr8
https://github.com/Budibase/budibase/security/advisories/GH…
https://github.com/Budibase/budibase/security/advisories/GHSA-wxq7-x3qp-vcr8