CVE-2026-93574

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:69440
https://access.redhat.com/errata/RHSA-2026:69470
https://access.redhat.com/errata/RHSA-2026:83612
https://access.redhat.com/security/cve/CVE-2026-93574
https://bugzilla.redhat.com/show_bug.cgi?id=2536966

Configurations

No configuration.

History

15 Oct 2026, 17:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:83612 -

22 Sep 2026, 18:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:69440 -

21 Sep 2026, 18:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:69470 -

18 Sep 2026, 21:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-18 21:18

Updated : 2026-10-15 17:17

NVD link : CVE-2026-93574

Mitre link : CVE-2026-93574

CVE.ORG link : CVE-2026-93574

JSON object : View

Products Affected

No product.

CWE

CWE-444

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

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