High 7.7Published May 5, 2026

CVE-2026-23479redis-server use-after-free in unblock client flow may allow remote code execution

Updated under an hour ago (Oct 29, 2026, 12:23 AM ET)

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It affects redis and 4 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for redis

Exploited in the last 30 days

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: 7.7 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Modified
Record last updated: Jul 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

redis redis redis:redis (from the name)	from 7.2.0, < 8.6.3	CNA record
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	from 0:8.0.9-1.el10_2 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus	from 0:8.0.9-1.el10_0 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus	from 9060020260602115714.9 not affected	CISA ADP
Red Hat Red Hat Hardened Images redhat:hummingbird	from 9.0.4-0.1.hum1 not affected	CISA ADP
redis redis redis:redis	from 7.2.0 before 8.6.3	NVD

References

References

https://github.com/redis/redis/security/advisories/GHSA-93m2-935m-8rj3	x-refsource-confirm, vendor-advisory
https://github.com/redis/redis/releases/tag/8.6.3	x-refsource-misc, release-notes
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
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.