Dashboard / CVE-2026-93491

CVE-2026-93491

HIGH
MEDIUM Priority: 0.07 BB Relevance: 75/100
Published: 2026-09-18 Modified: 2026-11-06 First seen: 2026-11-06 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: None
A: High

Description

A flaw was found in Netty's HttpServerCodec. A remote, unauthenticated attacker can exploit this vulnerability by pipelining HTTP/1.1 requests on a single connection and withholding reads. This action causes the methodOverflowQueue to grow without limit, leading to unbounded heap memory consumption and a denial of service due to memory exhaustion.

Weakness Classification (1)

References & Advisories (13)

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-2026:70257
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-2026:95887
vendor-advisory x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2536891
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.88%
Raw Score 0.008810
Percentile 59.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00881
2026-11-12
0.00881
2026-11-10
0.00881
2026-11-09
0.00881
2026-11-08
0.00881
2026-11-07
0.00881
2026-11-06
0.00734
2026-11-05
0.00734

Intelligence Sources

mitre ref →
nvd ref →

External Links