ID:13103 - Exploit for Use-after-free in Redis - CVE-2026-23631

Vulnerability identifier: #VU130201

Vulnerability risk: Medium

CVE-ID: CVE-2026-23631

CWE-ID: CWE-416

Exploitation vector: Remote access

Vulnerable software:
Redis
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SecurityCenter
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
Fedora
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Server Applications Module
openSUSE Leap
openEuler
Anolis OS
redis7
redis7-debuginfo
redis7-debugsource
redis
redis-debugsource
redis-debuginfo
redis-devel
redis-doc
valkey
valkey (Red Hat package)
valkey-compat-redis
valkey-debugsource
valkey-devel
valkey-debuginfo

https://github.com/yoyosh/DarkReplica

The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to use-after-free in the Lua scripting synchronization mechanism when exploiting master-replica synchronization. A remote user can trigger the flaw through crafted Lua script execution to execute arbitrary code.

Only replicas with replica-read-only disabled are vulnerable.

Install security update from vendor's website.