Bug 2457819 (CVE-2026-39852) - CVE-2026-39852 io.quarkus:quarkus-vertx-http: io.quarkus:quarkus-vertx-http: Authorization bypass via semicolons in HTTP requests
Summary: CVE-2026-39852 io.quarkus:quarkus-vertx-http: io.quarkus:quarkus-vertx-http: ...
Keywords:
Status: NEW
Alias: CVE-2026-39852
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-13 13:31 UTC by OSIDB Bzimport
Modified: 2026-07-02 00:04 UTC (History)
86 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:13631 0 None None None 2026-05-05 07:57:07 UTC
Red Hat Product Errata RHSA-2026:17789 0 None None None 2026-05-26 03:54:39 UTC
Red Hat Product Errata RHSA-2026:34608 0 None None None 2026-07-02 00:04:01 UTC

Description OSIDB Bzimport 2026-04-13 13:31:25 UTC 
Quarkus is vulnerable to an authorization bypass issue where semicolons (matrix parameters) in HTTP requests can be used to bypass path-based  HTTP security policies. The vulnerability arises because Quarkus's security layer performs authorization checks on the raw URL path which preserves matrix parameters.

When a path such as "/api/admin" is protected by a path-based HTTP security policy, sending a request like "/api/admin;anything" can bypass this policy while still routing to the protected endpoint unless the policy is configured to protect the exact "/api/admin;anything" path.
Comment 2 errata-xmlrpc 2026-05-05 07:57:02 UTC 
This issue has been addressed in the following products:

  Red Hat Build of Apache Camel 4.14 for Quarkus 3.27

Via RHSA-2026:13631 https://access.redhat.com/errata/RHSA-2026:13631
Comment 4 errata-xmlrpc 2026-05-26 03:54:35 UTC 
This issue has been addressed in the following products:

  Cryostat 4 on RHEL 9

Via RHSA-2026:17789 https://access.redhat.com/errata/RHSA-2026:17789
Comment 5 errata-xmlrpc 2026-07-02 00:03:57 UTC 
This issue has been addressed in the following products:

  Streams for Apache Kafka 2.9.4

Via RHSA-2026:34608 https://access.redhat.com/errata/RHSA-2026:34608
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