{"id":"CVE-2026-23631","title":"Redis is an in-memory data structure store","summary":"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…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","cwe":["CWE-416","CWE-416"],"vendor":"redis","product":"redis","affected":["redis < 8.6.3"],"patched":["redis 8.6.3"],"published":"2026-05-05","updated":"2026-06-30","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-23631","references":[{"url":"https://github.com/redis/redis/releases/tag/8.6.3","label":"security-advisories@github.com"},{"url":"https://github.com/redis/redis/security/advisories/GHSA-8ghh-qpmp-7826","label":"security-advisories@github.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:25216","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:25219","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:25925","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:26306","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:26540","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:33444","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-23631","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2466788","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23631.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}],"tags":["nvd","exploit-available"],"epss":0.02805,"epssPercentile":0.85895,"ingestedAt":"2026-07-01T09:50:45.529Z","exploits":{"github":2,"githubRepos":["https://github.com/yoyosh/DarkReplica","https://github.com/HORKimhab/CVE-2026-23631"],"checkedAt":"2026-09-24T07:53:00.928Z"},"exploitAvailable":true,"slug":"CVE-2026-23631","body":"## Overview\n\nRedis 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.\n\n## Affected\n\n- `redis < 8.6.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `redis 8.6.3`","depth":"midnight","depthScore":57,"depthScoreParts":{"impact":44.6,"likelihood":0.6,"exploitation":12,"ransomware":0},"changes":[{"seq":5018,"id":"CVE-2026-23631","ts":1788887228975,"field":"exploit_available","old":"false","new":"true"},{"seq":3901,"id":"CVE-2026-23631","ts":1788886360039,"field":"exploit_available","old":"true","new":"false"},{"seq":2723,"id":"CVE-2026-23631","ts":1788883025782,"field":"exploit_available","old":"false","new":"true"},{"seq":1752,"id":"CVE-2026-23631","ts":1788882429803,"field":"exploit_available","old":"true","new":"false"},{"seq":858,"id":"CVE-2026-23631","ts":1788881862826,"field":"exploit_available","old":"false","new":"true"}]}