Executive Summary

CVE-2023-6393: A flaw in Quarkus Cache Runtime causes request processing to switch to a cached Uni’s context when @CacheResult is used. If the cached Uni contains sensitive data, a malicious user can trigger a POST request and receive another user’s response, leaking confidential information. The vulnerability is not yet listed in CISA KEV.

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Authoritative CVE Metadata - CVSS Base Score: 5.3 (MEDIUM) - Published: 2023-12-06T17:15:07.377 - Last Modified: 2026-09-29T10:17:08.550

Original Description: 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.

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