What is CVE-2026-47843?

CVE-2026-47843 is a low-severity vulnerability in Spring Reactor Netty, classified under CWE-706 USE OF INCORRECTLY-RESOLVED NAME OR REFERENCE. CVSS score: 3.7/10. Published 2026-08-26.

How severe is CVE-2026-47843?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Spring Reactor Netty

CVE-2026-47843

In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may incorrectly reuse a previously configured DNS resolver. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Spring Reactor Netty

References

security@vmware.com

Frequently asked questions

What is CVE-2026-47843?: CVE-2026-47843 is a low-severity vulnerability in Spring Reactor Netty, classified under CWE-706 USE OF INCORRECTLY-RESOLVED NAME OR REFERENCE. CVSS score: 3.7/10. Published 2026-08-26.
How severe is CVE-2026-47843?: Low severity. CVSS v3 base score is 3.7 out of 10.