---
id: CVE-2026-59303
title: |-
  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
summary: |-
  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
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N'
cwe:
  - CWE-770
published: '2026-08-27'
updated: '2026-08-28'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-59303'
references:
  - url: 'https://spring.io/security/cve-2026-59303'
    label: security@vmware.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59303.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-59303'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-59303'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
epss: 0.00211
epssPercentile: 0.10085
ingestedAt: '2026-08-29T21:42:35.686Z'
vendor: Red Hat
---

## Overview

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

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59303.json)