Medium [CVE-2026-59295] Micrometer Instrumentation for Apache HttpAsyncClient: Denial of Service via asynchronous request failures
This medium-severity Red Hat Linux advisory covers CVE-2026-59295 affecting Red Hat AMQ Broker 7, Red Hat build of Quarkus.
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Summary
Micrometer-instrumented Apache HttpAsyncClient (4.x or 5.x) usage via MicrometerHttpClientInterceptor can leak memory unboundedly when asynchronous requests fail before receiving a response (e.g. connection resets or timeouts).
Tracking state for these requests remains in memory indefinitely, and sustained failures lead to heap exhaustion and OutOfMemoryError crashes. A flaw was found in Micrometer Instrumentation for Apache HttpAsyncClient.
This continuous memory leak leads to heap exhaustion and OutOfMemoryError crashes, resulting in a Denial of Service (DoS) for the affected application. This Moderate severity flaw impacts Red Hat products utilizing Micrometer-instrumented Apache HttpAsyncClient.
The vulnerability can lead to a denial of service due to unbounded memory growth when asynchronous requests fail before a response is received. Exploitation requires specific network conditions or failures, making the attack complexity high.
Weakness: CWE-772. Affected Red Hat products: Red Hat AMQ Broker 7; Red Hat build of Quarkus.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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