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Redis CVE-2026-23631

| EUVD-2026-27398 MEDIUM
Use After Free (CWE-416)
2026-05-05 GitHub_M
6.1
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Patch available
May 05, 2026 - 18:02 EUVD
Source Code Evidence Fetched
May 05, 2026 - 17:32 vuln.today
Analysis Generated
May 05, 2026 - 17:32 vuln.today
CVSS changed
May 05, 2026 - 17:22 NVD
6.1 (MEDIUM)

DescriptionNVD

Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-free on replicas where replica-read-only is disabled or can be disabled, which may lead to remote code execution. A workaround is to prevent users from executing Lua scripts or avoid using replicas where replica-read-only is disabled. This is patched in version 8.6.3.

AnalysisAI

Redis-server with Lua scripting allows authenticated attackers to trigger a use-after-free vulnerability on replicas where replica-read-only is disabled, potentially leading to remote code execution. The vulnerability exploits the master-replica synchronization mechanism and is present in all versions prior to 8.6.3. …

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Vendor StatusVendor

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CVE-2026-23631 vulnerability details – vuln.today

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