CVE-2026-93561

Summary

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.

Affected Software

Weaknesses

• CWE-1035: CWE-1035

Workarounds

See https://github.com/netty/netty/security/advisories/GHSA-wxrh-4rgq-pjcg for fixed versions and remediation guidance.

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

Additional References

• https://bugzilla.redhat.com/show_bug.cgi?id=2536949

References

• https://access.redhat.com/security/cve/CVE-2026-93561
• https://bugzilla.redhat.com/show_bug.cgi?id=2536949

• ←Previous
• Next→