CVE-2026-23631 — redis-server Lua use-after-free may allow remote code execution

Description (CNA)

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 (CNA)

Vendor / product	Versions
redis / redis	affected < 8.6.3

CWE

CWE-416

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A flaw was found in Redis, an in-memory data structure store. An authenticated attacker can exploit a use-after-free vulnerability in redis-server with Lua scripting. This occurs through the master-replica synchronization mechanism on replicas where replica-read-only is disabled or can be disabled. Successful exploitation may lead to remote code execution.