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

Quick assessment

Affected
redis redis
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Redis是美国Redis公司的一套开源的使用ANSI C编写、支持网络、可基于内存亦可持久化的日志型、键值（Key-Value）存储数据库，并提供多种语言的API。 Redis存在资源管理错误漏洞，该漏洞源于Lua脚本中，经过身份验证的攻击者可利用主从复制同步机制，在禁用或可禁用replica-read-only的副本上触发释放后重用，可能导致远程代码执行。

AI Predicted 9.0 Difficulty: Moderate EPSS 2.80% · P86

Affected Version Matrix 1

VendorProduct Version RangeStatus
redis redis < 8.6.3 affected
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I. Basic Information for CVE-2026-23631

Vulnerability Information
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Vulnerability Title
redis-server Lua use-after-free may allow remote code execution
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Redis 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Redis是美国Redis公司的一套开源的使用ANSI C编写、支持网络、可基于内存亦可持久化的日志型、键值（Key-Value）存储数据库，并提供多种语言的API。 Redis存在资源管理错误漏洞，该漏洞源于Lua脚本中，经过身份验证的攻击者可利用主从复制同步机制，在禁用或可禁用replica-read-only的副本上触发释放后重用，可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
redis redis < 8.6.3 -

II. Public POCs for CVE-2026-23631

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Reproduction recording is a Pro+ exclusive
Watch the full sandbox build + live exploit recording for this CVE. Limited-time ¥499/mo.
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claude_code · 4233 chars
GitHub 复现环境（可 clone 直接跑）
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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POC zip download
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III. Intelligence Information for CVE-2026-23631

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Vendor Advisories for CVE-2026-23631 (1)

Vendor Pages for CVE-2026-23631 (1)

Same Patch Batch · redis · 2026-05-05 · 3 CVEs total

CVE-2026-25243 redis-server RESTORE invalid memory access may allow remote code execution
CVE-2026-23479 redis-server use-after-free in unblock client flow may allow remote code execution

IV. Related Vulnerabilities

Same product: redis
Same vendor: redis
Same weakness: CWE-416

V. Comments for CVE-2026-23631

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