7.5High
CVE-2026-94449Quarkus-smallrye-fault-tolerance: quarkus-smallrye-fault-tolerance: memory leak in @applyguard leads to denial of service
Description
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.
Weakness (CWE):
CWE-400
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| quarkus | 3.27 | — | |
| quarkus | 3.33 | — | |
| Red Hat | Exploit Intelligence | — | |
| Red Hat | Red Hat Build of Apache Camel 3.33.4.redhat | all versions | |
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 | all versions | |
| Red Hat | Red Hat build of Apicurio Registry 3 | all versions | |
| Red Hat | Red Hat build of Quarkus 3.27.6.redhat | all versions | |
| Red Hat | Red Hat build of Quarkus 3.33.4.redhat | all versions | |
| Red Hat | Red Hat Fuse 7 | — |
References and patches
- RHSA-2026:83082 vendor-advisory
- RHSA-2026:83520 vendor-advisory
- RHSA-2026:83670 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-94449 vdb-entry
- RHBZ#2537502 issue-tracking