CVE-2026-50559

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/quarkusio/quarkus/security/advisories/GHSA-qcxp-gm7m-4j5v	Exploit Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:26017
https://access.redhat.com/errata/RHSA-2026:26018
https://access.redhat.com/errata/RHSA-2026:26194
https://access.redhat.com/errata/RHSA-2026:26586
https://access.redhat.com/errata/RHSA-2026:34608
https://access.redhat.com/errata/RHSA-2026:36820
https://access.redhat.com/errata/RHSA-2026:48151
https://access.redhat.com/errata/RHSA-2026:54435
https://access.redhat.com/security/cve/CVE-2026-50559
https://bugzilla.redhat.com/show_bug.cgi?id=2486959
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50559.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:quarkus:quarkus::::::::
	cpe:2.3:a:quarkus:quarkus::::::::
	cpe:2.3:a:quarkus:quarkus::::::::
	cpe:2.3:a:quarkus:quarkus::::::::

History

No history.

Information

Published : 2026-06-19 21:17

Updated : 2026-08-13 13:19

NVD link : CVE-2026-50559

Mitre link : CVE-2026-50559

CVE.ORG link : CVE-2026-50559

JSON object : View

Products Affected

quarkus

quarkus

CWE

CWE-287

Improper Authentication

CWE-863

Incorrect Authorization

CWE-551

Incorrect Behavior Order: Authorization Before Parsing and Canonicalization

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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."}], "lastModified": "2026-08-13T13:19:11.090", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3E37C5F3-9057-44CE-A42A-71BD38827241", "versionEndExcluding": "3.20.6.2"}, {"criteria": "cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D726AC73-94BB-4DC6-A13F-52E7A93DC593", "versionEndExcluding": "3.27.4.1", "versionStartIncluding": "3.21.0"}, {"criteria": "cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DAAA66C6-B4F8-4517-A4FF-F3F831BEAF0F", "versionEndExcluding": "3.33.2.1", "versionStartIncluding": "3.28.0"}, {"criteria": "cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6E73505E-C605-42F6-B9A1-E9BDFF0090D8", "versionEndExcluding": "3.36.3", "versionStartIncluding": "3.34.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}