PT-2026-37085 · Redis · Redis-Server

Xint Code · Published 2026-05-05 · Updated 2026-05-05 · CVE-2026-23479

Positive Technologies (AI Summary)

CVSS v4.0

7.7

High

Base vector

AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions redis-server versions 7.2.0 through 8.6.2

Description An issue exists in the unblock client flow where an error return from the processCommandAndResetClient() function is not properly handled when re-executing a blocked command. If a blocked client is evicted during this process, an authenticated attacker can trigger a use-after-free condition, which may lead to remote code execution. Use-after-free is a memory corruption flaw that occurs when an application continues to use a pointer after it has been freed.

Recommendations Update to version 8.6.3.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-23479

Affected Products

Redis-Server

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-23479 · Security Note
• https://github.com/redis/redis/security/advisories/GHSA-93m2-935m-8rj3 · Note
• https://github.com/redis/redis/releases/tag/8.6.3 · Note
• https://twitter.com/infoflowcloud/status/2051742861528269115 · Twitter Post
• https://twitter.com/CVEnew/status/2051741663052058650 · Twitter Post