CVE-2026-87743

A flaw was found in Quarkus HTTP security. An unauthenticated attacker can exploit a discrepancy in how paths are normalized between the security matcher and HTTP request dispatchers. This allows the attacker to craft a URL that the security matcher considers public, but which is then routed to a protected endpoint, leading to an authorization bypass and potential unauthorized access to sensitive information.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:69440
https://access.redhat.com/errata/RHSA-2026:69470
https://access.redhat.com/errata/RHSA-2026:90321
https://access.redhat.com/security/cve/CVE-2026-87743
https://bugzilla.redhat.com/show_bug.cgi?id=2530523

Configurations

No configuration.

History

29 Oct 2026, 18:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:90321 -

22 Sep 2026, 11:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:69440 -

21 Sep 2026, 17:19

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:69470 -

18 Sep 2026, 10:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-18 10:17

Updated : 2026-10-29 18:17

NVD link : CVE-2026-87743

Mitre link : CVE-2026-87743

CVE.ORG link : CVE-2026-87743

JSON object : View

Products Affected

No product.

CWE

CWE-551

Incorrect Behavior Order: Authorization Before Parsing and Canonicalization

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