Resource exhaustion in Netty

CVE-2026-44891

Netty is a network application framework for development of protocol servers and clients. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.stomp.StompSubframeDecoder fails to limit the total number of headers or their cumula…

Vulnerability class: DoS (Denial of Service)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Netty — versions < 4.1.136.Final, >= 4.2.0.Final, < 4.2.16.Final

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-44891?
CVE-2026-44891 is a high-severity vulnerability in Netty, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-07-17.
How severe is CVE-2026-44891?
High severity. CVSS v3 base score is 7.5 out of 10.