CVE-2026-93574

Published: Sep 18, 2026Modified: Oct 15, 2026

6.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Exploitability: 3.9 / Impact: 2.5

Source: secalert@redhat.com (Secondary)

Description

A flaw was found in Netty's `netty-codec-http` component. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP/1.1 chunk-size token that includes post-digit whitespace. This incorrect parsing of the chunk size can lead to HTTP request smuggling. This allows an attacker to bypass security controls or access unauthorized resources in proxy/backend deployments.

Related CWEs

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

References (5)

https://access.redhat.com/errata/RHSA-2026:69440

Source: secalert@redhat.com

https://access.redhat.com/errata/RHSA-2026:69470

Source: secalert@redhat.com

https://access.redhat.com/errata/RHSA-2026:83612

Source: secalert@redhat.com

https://access.redhat.com/security/cve/CVE-2026-93574

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2536966

Source: secalert@redhat.com

Timeline

No history available yet.