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netty

A vulnerability in io.netty/netty-codec-memcache allows a malicious Memcache server to exploit a protocol parsing flaw. The codec incorrectly interprets keyLength and extrasLength fields as signed instead of unsigned, causing frame desynchronization and response smuggling. This can lead to one client's data being exposed to another in proxy or cache environments. The issue affects multiple specific versions of netty. The CVSS score is 6.5 (medium severity).

The Memcache binary protocol codec in io.netty/netty-codec-memcache incorrectly reads the keyLength and extrasLength fields as signed Java types rather than unsigned as required by the protocol specification. A malicious Memcache server can exploit this mismatch by sending specially crafted responses that cause frame desynchronization and response smuggling. This flaw can result in cross-client data exposure in proxy or cache scenarios. The vulnerability is identified as CVE-2026-93561 with a CVSS 3.1 base score of 6.5, indicating medium severity. Multiple specific netty versions are affected as listed.

Detailed information about A flaw was found in io.netty/netty-codec-memcache. (CVE-2026-93561) affecting null netty. Get real-time updates, technical details, a

A flaw was found in io.netty/netty-codec-memcache. (CVE-2026-93561) - Live Threat Intelligence - Threat Radar | OffSeq.com

A flaw was found in io.netty/netty-codec-memcache. (CVE-2026-93561)

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