Deserialization of Untrusted Data in Spring Cloud Stream - CVE-2026-59306

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Main Vulnerability Database Vulnerabilities #VU146431

Deserialization of Untrusted Data in Spring Cloud Stream - CVE-2026-59306

Published: August 31, 2026


Vulnerability identifier: #VU146431
CSH Severity: Low
CVSS v4: 1.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-59306
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote user to deserialize untrusted types.

The vulnerability exists due to unsafe deserialization in Spring Cloud Stream when handling specially crafted input. A remote privileged user can supply crafted data to deserialize untrusted types.

User interaction is required.


Affected software

Spring Cloud Stream
Library Support for Spring

How to mitigate CVE-2026-59306

Install security update from vendor's website.

Spring Cloud Stream - addressed in versions 4.2.7, 4.3.4, 5.0.3
Library Support for Spring - update to 3.5.19

External References

Related Security Bulletins