CVE-2026-50559
Authentication/Authorization Bypass via Advanced Path Normalization Vulnerabilities
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-287 CWE-863 |
| Vendor | quarkusio |
| Product | quarkus |
| Published | Jun 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
quarkusio / quarkus
>= 3.36.0, < 3.36.3 >= 3.33.0, < 3.33.2.1 >= 3.27.0, < 3.27.4.1 < 3.20.6.2