CVE-2026-94449

Quarkus-smallrye-fault-tolerance: quarkus-smallrye-fault-tolerance: memory leak in @applyguard leads to denial of service

Published: Sep 21, 2026Updated: Sep 22, 2026 Sources: CVE List NVDCWE-400

7.5HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

Open in CVSS calculator →

Weaknesses

CWE-400

Affected Products

Red Hat

commercial·US

Exploit IntelligenceOn-prem

Operating Systems / linux-distro

Red Hat build of Apache Camel 4 for Quarkus 3LibraryLibrary

OSS Libraries / generic-library

Red Hat build of Apicurio Registry 3On-prem

DevTools & CI

Red Hat build of QuarkusLibraryLibrary

OSS Libraries / generic-library

Red Hat Fuse 7On-premDev Tool

DevTools & CI / ci-cd

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Is your org exposed to CVE-2026-94449?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique

Impact

View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2026-94449

access.redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2537502

bugzilla.redhat.com

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-94449 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows