Path-Based Authorization Bypass in Quarkus Java Framework
CVE-2026-50559

7.5HIGH

Key Information:

Vendor

Quarkusio

Status
Quarkus
Vendor
CVE Published:
19 June 2026

What is CVE-2026-50559?

Quarkus, a popular Java framework for cloud-native applications, is susceptible to a security flaw that permits the bypassing of HTTP path-based authorization policies. This vulnerability allows unauthenticated users to access protected static resources by exploiting encoded semicolons (%3B), slashes (%2F), or backslashes (%5C) to smuggle matrix parameters past security measures. Affected users are urged to upgrade to versions 3.37.0, 3.36.3, 3.33.2.1, 3.33.3, 3.27.4.1, 3.27.5, or 3.20.6.2, which contain fixes for this issue.

Affected Version(s)

quarkus >= 3.36.0, < 3.36.3 < 3.36.0, 3.36.3

quarkus >= 3.33.0, < 3.33.2.1 < 3.33.0, 3.33.2.1

quarkus >= 3.27.0, < 3.27.4.1 < 3.27.0, 3.27.4.1

References

https://github.com/quarkusio/quarkus/security/advisories/...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.