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

Configurations

Configuration 1 (hide)

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

History

06 May 2026, 15:53

Type	Values Removed	Values Added
References	~~() https://github.com/redis/redis/releases/tag/8.6.3 -~~	() https://github.com/redis/redis/releases/tag/8.6.3 - Release Notes
References	~~() https://github.com/redis/redis/security/advisories/GHSA-93m2-935m-8rj3 -~~	() https://github.com/redis/redis/security/advisories/GHSA-93m2-935m-8rj3 - Vendor Advisory
CPE		cpe:2.3:a:redis:redis::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 8.8
First Time		Redis redis Redis

05 May 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-05 17:17

Updated : 2026-05-06 15:53

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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