Description
Quarkus is a Java framework for building cloud-native applications. Prior to versions 3.37.0, 3.36.3, 3.33.2.1, 3.33.3, 3.27.4.1, 3.27.5, and 3.20.6.2, Quarkus HTTP path-based authorization policies can be bypassed using encoded semicolons (%3B) to smuggle matrix parameters past the security layer, and using encoded slashes (%2F) or backslashes (%5C) to access protected static resources. This is a distinct issue from CVE-2026-39852, which addressed only literal semicolon stripping. Versions 3.37.0, 3.36.3, 3.33.2.1, 3.33.3, 3.27.4.1, 3.27.5, and 3.20.6.2 contain a patch.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected products
- quarkusio / quarkus>= 3.36.0, < 3.36.3 – >= 3.36.0, < 3.36.3
- quarkusio / quarkus>= 3.33.0, < 3.33.2.1 – >= 3.33.0, < 3.33.2.1
- quarkusio / quarkus>= 3.27.0, < 3.27.4.1 – >= 3.27.0, < 3.27.4.1
- quarkusio / quarkus< 3.20.6.2 – < 3.20.6.2