CVE-2026-23631: Redis

High severity, CVSS 8.1. EPSS: 2.8% chance of exploitation in the next 30 days.

Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-free on replicas where replica-read-only is disabled or can be disabled, which may lead to remote code execution. A workaround is to prevent users from executing Lua scripts or avoid using replicas where replica-read-only is disabled. This is patched in version 8.6.3.

Affected products

• Redis Redis: before 8.6.3 (fixed in 8.6.3)

Published 2026-05-05. Last modified 2026-07-25.