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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
quarkusio quarkus affected
Version Status Constraints
>= 3.36.0, < 3.36.3 affected —
>= 3.33.0, < 3.33.2.1 affected —
>= 3.27.0, < 3.27.4.1 affected —
< 3.20.6.2 affected —

No data.

Package CPE Advisory Released Date
Red Hat Build of Apache Camel 3.33 for Quarkus 3.33.2.SP1
quarkus-vertx-http cpe:/a:redhat:apache_camel_quarkus:3.33 RHSA-2026:26586 2026-06-17T00:00:00Z
Red Hat build of Quarkus 3.20.6.SP2
quarkus-vertx-http cpe:/a:redhat:quarkus:3.20::el8 RHSA-2026:26194 2026-06-17T00:00:00Z
Red Hat build of Quarkus 3.27.4.SP1
quarkus-vertx-http cpe:/a:redhat:quarkus:3.27::el8 RHSA-2026:26018 2026-06-17T00:00:00Z
Red Hat build of Quarkus 3.33.2.SP1
quarkus-vertx-http cpe:/a:redhat:quarkus:3.33::el8 RHSA-2026:26017 2026-06-17T00:00:00Z

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Project Subscriptions

Vendors Products
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Quarkus Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/quarkusio/quarkus/security/advisories/GHSA-qcxp-gm7m-4j5v cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-50559 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-50559 cve-icon
History

Fri, 19 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Description A flaw was found in Quarkus. A remote attacker could bypass HTTP path-based authorization policies by using specially crafted encoded semicolons, slashes, or backslashes in HTTP requests. This could allow unauthorized access to protected static resources, leading to information disclosure. 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.
Title io.quarkus/quarkus-vertx-http: Quarkus: Authorization bypass in HTTP path-based policies via encoded characters Authentication/Authorization Bypass via Advanced Path Normalization Vulnerabilities
Weaknesses CWE-287
CWE-863

Thu, 18 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in Quarkus. A remote attacker could bypass HTTP path-based authorization policies by using specially crafted encoded semicolons, slashes, or backslashes in HTTP requests. This could allow unauthorized access to protected static resources, leading to information disclosure.
Title io.quarkus/quarkus-vertx-http: Quarkus: Authorization bypass in HTTP path-based policies via encoded characters
First Time appeared Redhat
Redhat apache Camel Quarkus
Redhat quarkus
Weaknesses CWE-551
CPEs cpe:/a:redhat:apache_camel_quarkus:3.33
cpe:/a:redhat:quarkus:3.20::el8
cpe:/a:redhat:quarkus:3.27::el8
cpe:/a:redhat:quarkus:3.33::el8
Vendors & Products Redhat
Redhat apache Camel Quarkus
Redhat quarkus
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

threat_severity

Important

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-19T20:26:39.322Z

Reserved: 2026-06-04T21:34:34.426Z

Link: CVE-2026-50559

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

Publid Date: 2026-06-17T00:00:00Z

Links: CVE-2026-50559 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-06-19T21:15:16Z

Weaknesses