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.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-416"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23631.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "8.6.3"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"original_tag": "8.6.3",
"range": [
{
"fixed": "bd3b38d41070b478c58bc8b72d2af89cbccd1a40"
}
],
"source": "REFERENCES_TAG"
},
{
"cpe": "cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "8.6.3"
}
],
"source": "CPE_RANGE"
}
]
}