Log in Start free

Vulnerability · Published Jun 19, 2026 · Assigned by GitHub_M

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

High 7.5

In plain English

A high-severity improper authentication in quarkus from quarkusio. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.0%top 36.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenio.quarkus:quarkus-vertx-http3.20.6.2GHSA-qcxp-gm7m-4j5v
Mavenio.quarkus:quarkus-vertx-http3.27.4.1GHSA-qcxp-gm7m-4j5v
Mavenio.quarkus:quarkus-vertx-http3.33.2.1GHSA-qcxp-gm7m-4j5v
Mavenio.quarkus:quarkus-vertx-http3.36.3GHSA-qcxp-gm7m-4j5v
Mavenio.quarkus:quarkus-vertx-http3.37.0GHSA-qcxp-gm7m-4j5v

Affected products (as reported)

VendorProductVersions
quarkusio quarkus >= 3.36.0, < 3.36.3>= 3.33.0, < 3.33.2.1>= 3.27.0, < 3.27.4.1< 3.20.6.2

Weakness: CWE-287, CWE-863, CWE-551 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References