redis-server Lua use-after-free may allow remote code execution_CVE-2026-23631

6.1 / 10

MEDIUM

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

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.

Basic Information

ID CVE-2026-23631

Source GitHub_M

Published May 5, 2026 at 16:39

Affected Product

Vendor redis

Product redis

Version < 8.6.3

Affected Versions redis redis < 8.6.3

CWE Classification

CWE-416

References

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    "published": "2026-05-05T16:39:32.337Z",
    "modified": "2026-05-05T16:39:32.337Z",
    "type": "cve",
    "title": "redis-server Lua use-after-free may allow remote code execution",
    "source": "GitHub_M",
    "references": "https://github.com/redis/redis/security/advisories/GHSA-8ghh-qpmp-7826\nhttps://github.com/redis/redis/releases/tag/8.6.3",
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