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CVE-2026-50559

Quarkus: Authentication/Authorization Bypass via Advanced Path Normalization Vulnerabilities

Impact

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.

Affected packages

EcosystemPackageAffectedFixed in
mavenio.quarkus:quarkus-vertx-http< 3.20.6.23.20.6.2

Affected products

VendorProductAffected versions
QuarkusQuarkus
before 3.20.6.2
from 3.21.0 before 3.27.4.1
from 3.28.0 before 3.33.2.1
from 3.34.0 before 3.36.3

Weakness classification

CWE-41CWE-178CWE-287CWE-551CWE-863

References