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CVE-2026-50559— Authentication/Authorization Bypass via Advanced Path Normalization Vulnerabilities

Quick assessment

Affected
quarkusio quarkus
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

quarkusio quarkus是quarkusio的开源应用框架。 quarkusio Quarkus存在授权问题漏洞，该漏洞源于HTTP路径授权策略使用编码分号(%3B)绕过授权、使用编码斜杠(%2F)或反斜杠(%5C)访问受保护的静态资源。以下版本受到影响：3.37.0之前版本、3.36.3之前版本、3.33.2.1之前版本、3.33.3之前版本、3.27.4.1之前版本、3.27.5之前版本和3.20.6.2之前版本。

CVSS 7.5 · High EPSS 0.67% · P50

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
quarkusio quarkus >= 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
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I. Basic Information for CVE-2026-50559

Vulnerability Information
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Vulnerability Title
Authentication/Authorization Bypass via Advanced Path Normalization Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
quarkusio Quarkus 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
quarkusio quarkus是quarkusio的开源应用框架。 quarkusio Quarkus存在授权问题漏洞，该漏洞源于HTTP路径授权策略使用编码分号(%3B)绕过授权、使用编码斜杠(%2F)或反斜杠(%5C)访问受保护的静态资源。以下版本受到影响：3.37.0之前版本、3.36.3之前版本、3.33.2.1之前版本、3.33.3之前版本、3.27.4.1之前版本、3.27.5之前版本和3.20.6.2之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
quarkusio quarkus >= 3.36.0, < 3.36.3 -

II. Public POCs for CVE-2026-50559

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III. Intelligence Information for CVE-2026-50559

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Vendor Advisories for CVE-2026-50559 (1)

IV. Related Vulnerabilities

Same product: quarkus
Same vendor: quarkusio
Same weakness: CWE-287

V. Comments for CVE-2026-50559

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