CVE-2025-46818: redis Code Injection — Fix

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.

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CVSS v3.1 Score

6.0

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

Weakness Type (CWE)

CWE-94 CWE-94

Affected Products

Vendor	Product	Versions
redis	redis	< 6.2.20
redis	redis	7.0 — 7.2.11
redis	redis	7.4.0 — 7.4.6
redis	redis	8.0.0 — 8.0.4
redis	redis	8.2.0 — 8.2.2

References

Advisories & Patches

https://github.com/redis/redis/commit/45eac0262028c771b6f5307372814b75f49f7a9e

Other References

https://github.com/redis/redis/releases/tag/8.2.2 https://github.com/redis/redis/security/advisories/GHSA-qrv7-wcrx-q5jp

Frequently Asked Questions

What is CVE-2025-46818? +

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. It has a CVSS v3.1 base score of 6.0 (MEDIUM).

How severe is CVE-2025-46818? +

CVE-2025-46818 has a CVSS v3.1 score of 6.0 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-46818? +

CVE-2025-46818 affects products from redis, specifically: redis. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-46818? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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