Detections
Analytics

SCA: security update for io.netty:netty-codec-http2 (GHSA-w9fj-cfpg-grvv)

high Tenable Self-Hosted Container Security Plugin ID 439336

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-33871)

Solution

Update the io.netty:netty-codec-http2 library and its related packages to version 4.1.132.Final or later.

See Also

https://github.com/advisories/GHSA-w9fj-cfpg-grvv

Plugin Details

Severity: High

ID: 439336

Version: Revision 1.9

Type: Local

Family: SCA Checks

Published: 3/27/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.71

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-33871

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/26/2026

Vulnerability Publication Date: 3/26/2026

Reference Information

CVE: CVE-2026-33871

cwe: CWE-770