CVE-2026-94449
Quarkus-smallrye-fault-tolerance: quarkus-smallrye-fault-tolerance: memory leak in @applyguard leads to denial of service
A flaw was found in the SmallRye Fault Tolerance library, which is used by Quarkus to provide strategies like retries and circuit breakers for microservices. The issue occurs when using the ApplyGuard or ApplyFaultTolerance annotations, where the library fails to release internal tracking objects after each request. This causes a steady increase in memory usage that eventually leads to the application slowing down and crashing due to lack of memory.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Red Hat Build of Apache Camel 3.33.4.redhat Red Hat io.quarkus/quarkus-smallrye-fault-tolerance
https://access.redhat.com/downloads/content/package-browser/ |
≥ 3.33.4.redhat-00004; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat build of Quarkus 3.27.6.redhat Red Hat io.quarkus/quarkus-smallrye-fault-tolerance
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html |
≥ 3.27.6.redhat-00004; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat build of Quarkus 3.33.4.redhat Red Hat io.quarkus/quarkus-smallrye-fault-tolerance
https://access.redhat.com/jbossnetwork/restricted/listSoftware.html |
≥ 3.33.4.redhat-00004; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Exploit Intelligence Red Hat exploit-intelligence/agent-client-rhel9
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unknown |
CNA: redhat |
| Red Hat build of Apache Camel 4 for Quarkus 3 Red Hat quarkus-smallrye-fault-tolerance
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat build of Apicurio Registry 3 Red Hat quarkus-smallrye-fault-tolerance
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Fuse 7 Red Hat quarkus-smallrye-fault-tolerance
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA: redhat |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://access.redhat.com/errata/RHSA-2026:83082CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:83520CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:83670CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-94449CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2537502CNA: redhat · issue-tracking, x_refsource_REDHAT
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