Valkey 9.0.3

Upgrade urgency SECURITY: This release includes security fixes we recommend you
apply as soon as possible.

Security fixes

• (CVE-2025-67733) RESP Protocol Injection via Lua error_reply
• (CVE-2026-21863) Remote DoS with malformed Valkey Cluster bus message
• (CVE-2026-27623) Reset request type after handling empty requests

Bug fixes

• Avoids crash during MODULE UNLOAD when ACL rules reference a module command and subcommand (#3160)
• Fix server assert on ACL LOAD when current user loses permission to channels (#3182)
• Fix bug causing no response flush sometimes when IO threads are busy (#3205)