CVE-2026-23479

Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

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-93m2-935m-8rj3	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-2026:7662
https://access.redhat.com/security/cve/CVE-2026-23479
https://bugzilla.redhat.com/show_bug.cgi?id=2466780
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23479.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-2026-23479

Mitre link : CVE-2026-23479

CVE.ORG link : CVE-2026-23479

JSON object : View

Products Affected

redis

redis

CWE

CWE-416

Use After Free

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[{"lang": "en", "value": "Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3."}, {"lang": "es", "value": "Redis es un almac\u00e9n de estructuras de datos en memoria. En redis-server desde la versi\u00f3n 7.2.0 hasta la 8.6.3, el flujo de desbloqueo del cliente no maneja un retorno de error de 'processCommandAndResetClient' al reejecutar un comando bloqueado. Si un cliente bloqueado es desalojado durante este flujo, un atacante autenticado puede desencadenar un uso despu\u00e9s de liberaci\u00f3n que puede conducir a la ejecuci\u00f3n remota de c\u00f3digo. Esto ha sido 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": "55566536-4FD7-4A12-864D-AD60A97EDB68", "versionEndExcluding": "8.6.3", "versionStartIncluding": "7.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}