VDB
DEBIAN-CVE-2026-33871
DEBIAN-CVE-2026-33871
PUBLISHED
CVSS 7.5 HIGH
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of `CONTINUATION` frames. The server's lack of a limit on the number of `CONTINUATION` frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to cause excessive CPU consumption with minimal bandwidth, rendering the server unresponsive. Versions 4.1.132.Final and 4.2.10.Final fix the issue.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | netty | 0, 1:4.1.48-16, 1:4.1.48-15 |
| Debian:12 | netty | 1:4.1.48-9, 1:4.1.48-12, 1:4.1.48-13 |
| Debian:13 | netty | 1:4.1.48-16, 1:4.1.48-15, 1:4.1.48-14 |
Timeline
- Mar 27, 2026 CVE Published
- Oct 1, 2026 CVE Updated