CVE-2026-23479
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| redis | redis | >= 7.2.0, < 8.6.3 | affected |
Weaknesses
- CWE-416: CWE-416: Use After Free
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
redis: use-after-free in unblock client flow may allow remote code execution
Additional References
- https://access.redhat.com/security/cve/CVE-2026-23479
- https://bugzilla.redhat.com/show_bug.cgi?id=2466780
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23479.json
- https://access.redhat.com/errata/RHSA-2026:26540
- https://access.redhat.com/errata/RHSA-2026:25216
- https://access.redhat.com/errata/RHSA-2026:26306
- https://access.redhat.com/errata/RHSA-2026:25219
- https://access.redhat.com/errata/RHSA-2026:25925
References
- https://github.com/redis/redis/security/advisories/GHSA-93m2-935m-8rj3
- https://github.com/redis/redis/releases/tag/8.6.3
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