CVE-2025-46818— Redis: Authenticated users can execute LUA scripts as a different user
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 8.2.1及之前版本存在代码注入漏洞，该漏洞源于允许经过身份验证的用户使用特制Lua脚本操作不同LUA对象，可能导致在另一用户环境中运行任意代码。
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I. Basic Information for CVE-2025-46818
Vulnerability Information
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Vulnerability Title
Redis: Authenticated users can execute LUA scripts as a different user
Source: CVE Program / CVE List V5
Vulnerability Description
Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user. The problem exists in all versions of Redis with LUA scripting. This issue is fixed in version 8.2.2. A workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing LUA scripts. This can be done using ACL to block a script by restricting both the EVAL and FUNCTION command families.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Redis 代码注入漏洞
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 8.2.1及之前版本存在代码注入漏洞，该漏洞源于允许经过身份验证的用户使用特制Lua脚本操作不同LUA对象，可能导致在另一用户环境中运行任意代码。
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
II. Public POCs for CVE-2025-46818
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | CVE-2025-46818 – Redis Lua Sandbox Cross-User Escape | https://github.com/dwisiswant0/CVE-2025-46818 | POC Details |
| 2 | Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user. The problem exists in all versions of Redis with LUA scripting. This issue is fixed in version 8.2.2. A workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing LUA scripts. This can be done using ACL to block a script by restricting both the EVAL and FUNCTION command families. | https://github.com/projectdiscovery/nuclei-templates/blob/main/javascript/cves/2025/CVE-2025-46818.yaml | POC Details |
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Same Patch Batch · redis · 2025-10-03 · 4 CVEs total
| CVE-2025-49844 | 10.0 CRITICAL | Redis Lua Use-After-Free may lead to remote code execution |
| CVE-2025-46817 | 7.0 HIGH | Lua library commands may lead to integer overflow and potential RCE |
| CVE-2025-46819 | 6.3 MEDIUM | Redis is vulnerable to DoS via specially crafted LUA scripts |
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V. Comments for CVE-2025-46818
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