Authorization Bypass in Quarkus HTTP Security
CVE-2026-87743

7.5HIGH

Key Information:

Vendor

Red Hat
Status
Exploit Intelligence
Openshift Serverless
Red Hat Build Of Apache Camel 4 For Quarkus 3
Red Hat Build Of Apicurio Registry 3
Vendor
CVE Published:
18 September 2026

What is CVE-2026-87743?

A vulnerability in Quarkus HTTP security has been identified that allows an unauthenticated attacker to exploit inconsistencies in path normalization. This flaw enables attackers to craft specific URLs that may be deemed public by the security matcher but are ultimately routed to protected endpoints. As a result, attackers could gain unauthorized access to sensitive information, posing significant risks to the integrity of the application.

References

https://access.redhat.com/security/cve/CVE-2026-87743
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2530523
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Michael Read (https://github.com/Michael-JRead) for reporting this issue.
.