Input validation error in Spring Integration - CVE-2026-47859
Published: August 28, 2026
Vulnerability identifier: #VU146195
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-47859
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper input validation in RFC6587SyslogDeserializer when processing octet-counted RFC 6587 / RFC 5424 frames. A remote user can send a frame with an arbitrarily large declared length to cause a denial of service.
The non-transparent LF-delimited framing path is not affected.
Affected software
Spring Integration
Library Support for Spring
Library Support for Spring
How to mitigate CVE-2026-47859
Install security update from vendor's website.
Spring Integration - addressed in versions 5.5.22, 6.4.13, 6.5.11, 7.0.5.1, 7.0.6, 7.1.0.1, 7.1.1
Library Support for Spring - update to 3.5.19
Library Support for Spring - update to 3.5.19