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HIGHFixed upstream
CVE-2026-23631
Redis is an in-memory data structure store.
Technology
Redis
CVSS Score
8.1 / 10.0
Affected Versions
<8.6.3
Upstream Fix
See upstream advisory
Published
May 5, 2026
OSSeva Coverage
Fixed upstream
Description
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.
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