# CVE-2026-23479 — redis

> As of 2026-07-16, CVE-2026-23479 is a HIGH-severity vulnerability in redis, CVSS v3.1 7.5, EPSS 1.5% (73.6th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-23479, most recently “Redis RCE CVE-2026-23479 — Use-After-Free in unblockClientOnKey() (Authenticated, CVSS 8.8)”.

**Last updated:** 2026-07-16

## What is 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.

The record classifies CVE-2026-23479 under weakness class [CWE-416](https://intel.threadlinqs.com/cwe/CWE-416). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 158 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.5 — HIGH (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **CVSS v4.0 base score:** 7.7 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 1.5% probability of exploitation in the next 30 days, higher than 73.6% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 8.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-05-05, last modified 2026-07-16

## Is CVE-2026-23479 being exploited?

Weaponised exploit code for CVE-2026-23479 is publicly available. 4 public proof-of-concept repositories are tracked for this identifier. It currently carries a trending score of 31 in the Threadlinqs vulnerability feed.

- [HackSpeak/CVE-2026-23479](https://github.com/HackSpeak/CVE-2026-23479) (github)
- [pduggusa/redis-cve-2026-23479-check](https://github.com/pduggusa/redis-cve-2026-23479-check) (github)
- [v1c0mmrt/redis-cve-2026-23479-scanner](https://github.com/v1c0mmrt/redis-cve-2026-23479-scanner) (github)
- [rizlmaulanaa/CVE-2026-23479-Redis-UAF-Proof-of-Concept](https://github.com/rizlmaulanaa/CVE-2026-23479-Redis-UAF-Proof-of-Concept) (github)

## Affected products and versions

- [redis](https://intel.threadlinqs.com/vendors/redis): redis

## How to fix CVE-2026-23479

No vendor patch reference has been recorded for CVE-2026-23479 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-23479

1 tracked threat in the Threadlinqs corpus references CVE-2026-23479, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Redis RCE CVE-2026-23479 — Use-After-Free in unblockClientOnKey() (Authenticated, CVSS 8.8)](https://intel.threadlinqs.com/threat/TL-2026-0682) — HIGH · 2026-06-04

## Sources

Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-10-10.

**Vendor advisory and patch**

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

**Other references**

- [github.com](https://github.com/redis/redis/releases/tag/8.6.3)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-23479
Full detection coverage and IOCs for threats exploiting CVE-2026-23479 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp