CVE-2026-23631

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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/redis/redis/releases/tag/8.6.3	Release Notes
https://github.com/redis/redis/security/advisories/GHSA-8ghh-qpmp-7826	Mitigation Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:14316
https://access.redhat.com/errata/RHSA-2026:25216
https://access.redhat.com/errata/RHSA-2026:25219
https://access.redhat.com/errata/RHSA-2026:25925
https://access.redhat.com/errata/RHSA-2026:26306
https://access.redhat.com/errata/RHSA-2026:26540
https://access.redhat.com/errata/RHSA-2026:33444
https://access.redhat.com/security/cve/CVE-2026-23631
https://bugzilla.redhat.com/show_bug.cgi?id=2466788
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23631.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-05 17:17

Updated : 2026-07-25 11:10

NVD link : CVE-2026-23631

Mitre link : CVE-2026-23631

CVE.ORG link : CVE-2026-23631

JSON object : View

Products Affected

redis

redis

CWE

CWE-416

Use After Free

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"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-416"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Redis es un almac\u00e9n de estructuras de datos en memoria. En todas las versiones de redis-server con scripting Lua, un atacante autenticado puede explotar el mecanismo de sincronizaci\u00f3n maestro-r\u00e9plica para desencadenar un uso despu\u00e9s de liberaci\u00f3n en r\u00e9plicas donde replica-read-only est\u00e1 deshabilitado o puede ser deshabilitado, lo que puede conducir a ejecuci\u00f3n remota de c\u00f3digo. Una soluci\u00f3n alternativa es evitar que los usuarios ejecuten scripts Lua o evitar el uso de r\u00e9plicas donde replica-read-only est\u00e1 deshabilitado. Esto est\u00e1 parcheado en la versi\u00f3n 8.6.3."}], "lastModified": "2026-07-25T11:10:00.100", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D27823C5-96F2-4D85-89CF-9C5DEAC584E3", "versionEndExcluding": "8.6.3"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}