---
id: CVE-2023-6393
title: A flaw was found in the Quarkus Cache Runtime
summary: >-
  A flaw was found in the Quarkus Cache Runtime. When request processing
  utilizes a Uni cached using @CacheResult and the cached Uni reuses the initial
  "completion" context, the processing switches to the cached Uni instead of the
  request …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-200
vendor: redhat
product: build_of_quarkus
affected:
  - build_of_quarkus
published: '2023-12-06'
updated: '2026-08-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-6393'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2023:7700'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2023-6393'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2253113'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2023-6393'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2253113'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00631
epssPercentile: 0.48046
ingestedAt: '2026-08-04T08:38:40.599Z'
---

## Overview

A flaw was found in the Quarkus Cache Runtime. When request processing utilizes a Uni cached using @CacheResult and the cached Uni reuses the initial "completion" context, the processing switches to the cached Uni instead of the request context. This is a problem if the cached Uni context contains sensitive information, and could allow a malicious user to benefit from a POST request returning the response that is meant for another user, gaining access to sensitive data.

## Affected

- `build_of_quarkus`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.