High severity · published Sep 18, 2026
CVE-2026-87743
Quarkus-vertx-http: authorization bypass via path normalization discrepancy in quarkus http security
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EI
Exploit Intelligence · Red Hat
All versions, or not specified · source: vendor
OS
OpenShift Serverless · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Build of Keycloak · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Fuse 7 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat OpenShift AI (RHOAI) · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat OpenShift Dev Spaces · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat build of Apache Camel 4 for Quarkus 3 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat build of Apicurio Registry 3 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat build of Debezium 3 · Red Hat
All versions, or not specified · source: vendor
Affected product
EI
Exploit Intelligence
Red Hat
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