Authentication/Authorization Bypass via Advanced Path Normalization Vulnerabilities

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Summary

CVECVE-2026-50559
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-19 21:17:02 UTC
Updated2026-06-19 21:17:02 UTC
DescriptionQuarkus 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-287 | CWE-863 | CWE-287 CWE-287: Improper Authentication | CWE-863 CWE-863: Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Quarkusio Quarkus affected >= 3.36.0, < 3.36.3 Not specified
CNA Quarkusio Quarkus affected >= 3.33.0, < 3.33.2.1 Not specified
CNA Quarkusio Quarkus affected >= 3.27.0, < 3.27.4.1 Not specified
CNA Quarkusio Quarkus affected < 3.20.6.2 Not specified

References

ReferenceSourceLinkTags
github.com/quarkusio/quarkus/security/advisories/GHSA-qcxp-gm7m-4j5v [email protected] github.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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