CVE-2026-93561 Affecting netty-codec-memcache package, versions *


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.18% (7th percentile)

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  • Snyk IDSNYK-RHEL7-NETTYCODECMEMCACHE-20123768
  • published24 Sept 2026
  • disclosed10 Sept 2026

Introduced: 10 Sep 2026

CVE-2026-93561  (opens in a new tab)
CWE-1035  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 netty-codec-memcache.

NVD Description

Note: Versions mentioned in the description apply only to the upstream netty-codec-memcache package and not the netty-codec-memcache package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

A flaw was found in io.netty/netty-codec-memcache. The Memcache binary protocol codec incorrectly reads keyLength and extrasLength as signed Java types instead of unsigned, as specified by the protocol. A malicious Memcache server can exploit this type mismatch by sending a specially crafted response. This can lead to frame desynchronization and response smuggling, where one client's data may be inadvertently exposed to another client's response stream in proxy or cache environments.

CVSS Base Scores

version 3.1