Bug 2525222 (CVE-2026-59303)

Summary: CVE-2026-59303 org.springframework.cloud/spring-cloud-stream: Spring Cloud Stream: Unbounded dynamic destination cache size
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Spring Cloud Stream where the dynamic destination cache size is not properly bound. This could lead to excessive memory consumption, potentially impacting system resources. An attacker with high privileges and user interaction could exploit this vulnerability over a network to achieve low impact on confidentiality and integrity.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-08-27 20:17:44 UTC 
Dynamic destination cache size is not properly bound in Spring Cloud Stream.
Spring Cloud Stream 5.0.0 - 5.0.2
Spring Cloud Stream 4.3.0 - 4.3.3
Spring Cloud Stream 4.2.0 - 4.2.6