CVE-2026-93492 Affecting netty package, versions <4.1.138-150200.4.56.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.37% (29th percentile)

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  • Snyk IDSNYK-SLES157-NETTY-20305825
  • published30 Sept 2026
  • disclosed29 Sept 2026

Introduced: 29 Sep 2026

NewCVE-2026-93492  (opens in a new tab)
CWE-1035  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 netty to version 4.1.138-150200.4.56.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream netty package and not the netty package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

A flaw was found in Netty's HTTP/2 HpackEncoder. A remote attacker can exploit this by sending HTTP/2 SETTINGS frames with a very large MAX_HEADER_TABLE_SIZE. This causes the HpackEncoder to store an excessive number of unique headers, leading to increased CPU usage and memory consumption, ultimately resulting in a Denial of Service (DoS).

CVSS Base Scores

version 3.1