CVE-2026-93574

MEDIUM
MEDIUM Priority: 0.11 BB Relevance: 73/100
Published: 2026-09-18 Modified: 2026-11-06 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: Low
A: Low

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.

References & Advisories (10)

https://access.redhat.com/errata/RHSA-2026:69440
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:69470
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:83612
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95760
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95761
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95759
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95762
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95887
vendor-advisory x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2536966
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

EPSS — Exploitation Probability

1.67%
Raw Score 0.016700
Percentile 77.2%
Date 2026-11-14

EPSS Trend

2026-11-14
0.01670
2026-11-13
0.01670
2026-11-12
0.01670
2026-11-10
0.01670
2026-11-09
0.01670
2026-11-08
0.01670
2026-11-07
0.01670
2026-11-06
0.01354
2026-11-05
0.01354
2026-11-04
0.01354
2026-11-03
0.01354

Intelligence Sources

mitre ref →
nvd ref →