What is CVE-2026-47859?

CVE-2026-47859 is a medium-severity vulnerability in Spring Integration, classified under CWE-770 ALLOCATION OF RESOURCES WITHOUT LIMITS OR THROTTLING. CVSS score: 5.4/10. Published 2026-08-27.

How severe is CVE-2026-47859?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Spring Integration

CVE-2026-47859

RFC6587SyslogDeserializer, used by the Spring Integration syslog TCP inbound adapter to decode RFC 6587 / RFC 5424 frames, trusts the sender-supplied octet count of an octet-counted frame and allocates a byte array of exactly that size with no upper bound. Spring Integration 7.1.0 Spring Integration 7.0.0 - 7.0.5 Spring Integration 6.5.0 - 6.5.10 Spring Integration 6.4.0 - 6.4.12 Spring Integration 5.5.21 and earlier

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Spring Integration — versions 7.1.0

References

security@vmware.com

Frequently asked questions

What is CVE-2026-47859?: CVE-2026-47859 is a medium-severity vulnerability in Spring Integration, classified under CWE-770 ALLOCATION OF RESOURCES WITHOUT LIMITS OR THROTTLING. CVSS score: 5.4/10. Published 2026-08-27.
How severe is CVE-2026-47859?: Medium severity. CVSS v3 base score is 5.4 out of 10.