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Fencer Vulns
high 7.5

CVE-2026-50559 json

Authentication/Authorization Bypass via Advanced Path Normalization Vulnerabilities

published 2026-06-19 4 mo ago modified 2026-10-25 14 d ago also EUVD-2026-38084 , GHSA-qcxp-gm7m-4j5v

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven io.quarkus:quarkus-vertx-http 3.20.6.2, 3.27.4.1, 3.33.2.1, 3.36.3, 3.37.0
  • Red Hat Cryostat 4 on RHEL 9 4.2.0-13
  • Red Hat Red Hat OpenShift Dev Spaces 3.29 1782989027

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-50559 updated cvss 7.5

io.quarkus/quarkus-vertx-http: Quarkus: Authorization bypass in HTTP path-based policies via encoded characters

  • Red Hat OpenShift Serverless openshift-serverless-1/kn-eventing-integrations-log-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-timer-source-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-s3-source-rhel9, +2 more Red Hat build of Apache Camel - HawtIO 4 quarkus-vertx-http Red Hat build of Apache Camel 4 for Quarkus 3 quarkus-vertx-http
    affected: workaround, no fix available
  • Red Hat build of Debezium 3 quarkus-vertx-http
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Fuse 7 quarkus-vertx-http
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Cryostat 4 on RHEL 9 cryostat/cryostat-rhel9 4.2.0-13, cryostat/jfr-datasource-rhel9 4.2.0-13, cryostat/cryostat-reports-rhel9 4.2.0-13
    fixed: vendor fix RHSA-2026:48151
  • Red Hat Build of Apache Camel 3.33.2.SP1 quarkus-vertx-http 3.33.2.redhat-00004
    fixed: vendor fix RHSA-2026:26586
  • Red Hat build of Quarkus 3.20.6.SP2 quarkus-vertx-http 3.20.6.redhat-00004
    fixed: vendor fix RHSA-2026:26194
  • Red Hat build of Quarkus 3.27.4.SP1 quarkus-vertx-http 3.27.4.redhat-00005
    fixed: vendor fix RHSA-2026:26018
  • Red Hat build of Quarkus 3.33.2.SP1 quarkus-vertx-http 3.33.2.redhat-00004
    fixed: vendor fix RHSA-2026:26017
show 10 more
  • Red Hat OpenShift AI 2.25 rhoai/odh-trustyai-service-rhel9 1790933094
    fixed: vendor fix RHSA-2026:87410
  • Red Hat OpenShift AI 3.4 rhoai/odh-trustyai-service-rhel9 1791792525
    fixed: vendor fix RHSA-2026:84734
  • Red Hat OpenShift Dev Spaces 3.29 devspaces/multicluster-redirector-rhel9 1782989027
    fixed: vendor fix RHSA-2026:36820
  • Red Hat Streams for Apache Kafka 2.9.4
    fixed: vendor fix RHSA-2026:34608
  • Red Hat Streams for Apache Kafka 3.2.1
    fixed: vendor fix RHSA-2026:54435
  • Red Hat Cryostat 4 on RHEL 9 cryostat/cryostat-db-rhel9 4.2.0-19, cryostat/cryostat-storage-rhel9 4.2.0-19, cryostat/cryostat-rhel9-operator 4.2.0-18, cryostat/cryostat-operator-bundle 4.2.0-11, cryostat/cryostat-agent-init-rhel9 0.7.0-11, cryostat/cryostat-grafana-dashboard-rhel9 4.2.0-13, +1 more Red Hat Build of Apache Camel 3.33.2.SP1 jimfs 1.1, jna 5.8.0, bcel 6.7.0, bson 5.6.4, gax 2.74.1, icu4j 78.2, +1630 more Red Hat build of Apicurio Registry 3 quarkus-vertx-http
    not affected: vulnerable code not present
  • Red Hat Build of Keycloak quarkus-vertx-http, rhbk-rhel9-operator, rhbk/keycloak-rhel9, rhbk-openshift-rhel9, rhbk/keycloak-rhel9-operator
    not affected: vulnerable code not in execute path
  • Red Hat build of Quarkus 3.20.6.SP2 jna 5.8.0, lit 3.2.1, bson 5.3.1, db2 1.20.6, h2 2.3.230, y18n 5.0.8, +1015 more Red Hat build of Quarkus 3.27.4.SP1 jna 5.8.0, db2 1.21.4, h2 2.3.230, y18n 5.0.8, cliui 8.0.1, guice 5.1.0, +1009 more Red Hat build of Quarkus 3.33.2.SP1 jna 5.8.0, bson 5.6.4, h2 2.4.240, y18n 5.0.8, cliui 8.0.1, guice 5.1.0, +1018 more
    not affected: vulnerable code not present
  • Red Hat JBoss Enterprise Application Platform Expansion Pack quarkus-vertx-http
    not affected: component not present
  • Red Hat OpenShift AI 2.25 rhoai/odh-rhel9-operator 1792570619, rhoai/odh-vllm-cpu-rhel9 1792018436, rhoai/odh-dashboard-rhel9 1791853525, rhoai/odh-modelmesh-rhel9 1790881700, rhoai/odh-operator-bundle 1792571069, rhoai/odh-vllm-cuda-rhel9 1791358976, +65 more Red Hat OpenShift AI 3.4 rhoai/odh-cli-rhel9 1791509689, rhoai/rhai-cli-rhel9 1791509689, rhoai/odh-automl-rhel9 1791535789, rhoai/odh-mlflow-rhel9 1791865967, rhoai/odh-autorag-rhel9 1791557539, rhoai/odh-trainer-rhel9 1791869783, +99 more Red Hat OpenShift Dev Spaces 3.29 devspaces/udi-rhel9 1782991491, devspaces/code-rhel9 1782498475, devspaces/server-rhel9 1783033397, devspaces/openvsx-rhel9 1783007534, devspaces/traefik-rhel9 1782403274, devspaces/udi-base-rhel9 1782987705, +10 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
4 mo ago

Exploit prediction

1.02% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/quarkusio/quarkus/security/advisories/GHSA-qcxp-gm7m-4j5v referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven io.quarkus:quarkus-vertx-http
<3.20.6.2
>=3.21.0.CR1, <3.27.4.1
>=3.28.0.CR1, <3.33.2.1
>=3.34.0.CR1, <3.36.3
>=3.37.0.CR1, <3.37.0
3.20.6.2
3.27.4.1
3.33.2.1
3.36.3
3.37.0

Affected products

  • quarkusio quarkus
  • Red Hat Cryostat 4 on RHEL 9
  • Red Hat Red Hat Build of Apache Camel 3.33 for Quarkus 3.33.2.SP1
  • Red Hat Red Hat build of Quarkus 3.20.6.SP2
  • Red Hat Red Hat build of Quarkus 3.27.4.SP1
  • Red Hat Red Hat build of Quarkus 3.33.2.SP1
  • Red Hat Streams for Apache Kafka 2.9.4
  • Red Hat Red Hat OpenShift Dev Spaces 3.29
  • Red Hat OpenShift Serverless
  • Red Hat Red Hat build of Apache Camel 4 for Quarkus 3
  • Red Hat Red Hat build of Apache Camel - HawtIO 4
  • Red Hat Red Hat build of Apicurio Registry 3
  • Red Hat Red Hat build of Debezium 3
  • Red Hat Red Hat Build of Keycloak
  • Red Hat Red Hat Fuse 7
  • Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat Red Hat OpenShift AI (RHOAI)
  • Red Hat streams for Apache Kafka 3

Classification

Weakness
  • CWE-287 Improper Authentication
  • CWE-863 Incorrect Authorization
  • CWE-551 Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
  • CWE-178 Improper Handling of Case Sensitivity
  • CWE-41 Improper Resolution of Path Equivalence

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.