CVE-2026-23479

redis-server use-after-free in unblock client flow may allow remote code execution

Published: May 5, 2026Updated: Jul 25, 2026 Sources: CVE List NVD BDUCWE-416

8.8HIGH

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-416

Affected Products

Redis Labs

oss-project·USaka redis, redis-py, redis labs redis, go-redis, redis server, hiredis

RedisOn-premDatabase

Databases / cache-message-queue

and 1 more affected products View all →

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

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References

https://github.com/redis/redis/security/advisories/GHSA-93m2-935m-8rj3

github.com

https://github.com/redis/redis/releases/tag/8.6.3

github.com

https://github.com/redis/redis/security/advisories/GHSA-93m2-935m-8rj3

github.com

and 12 more references View all →

News mentions

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