{"id":"CVE-2026-5759","published":"2026-10-09T05:16:44.920","lastModified":"2026-10-13T18:17:25.287","description":"A double free and use-after-free vulnerability in the RdbLoadDeletedNodes function of the RDB graph decoders (src/serializers/decoders/*/decode_graph_entities.c) in FalkorDB before 4.18.1 allows a remote attacker who can issue Redis replication commands (for example, against an instance with no password configured) to cause a denial of service or execute arbitrary code in the redis-server process by supplying a crafted RDB stream whose deleted-nodes buffer length is not a multiple of sizeof(NodeID). The length check relies on ASSERT(), which is compiled out in release builds, so the function continues after freeing the buffer, reading it and freeing it a second time.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-415","CWE-416"],"vendors":[],"products":[],"references":[{"url":"https://github.com/FalkorDB/FalkorDB/commit/523d98ac7ffe99f11a9c95c258025c235f0dff4c","tags":[]},{"url":"https://github.com/FalkorDB/FalkorDB/pull/1843","tags":[]},{"url":"https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.1","tags":[]}],"exploitRefs":[{"url":"https://github.com/FalkorDB/FalkorDB/commit/523d98ac7ffe99f11a9c95c258025c235f0dff4c","tags":[]},{"url":"https://github.com/FalkorDB/FalkorDB/pull/1843","tags":[]},{"url":"https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.1","tags":[]}],"hasPoc":true,"ai":{"summary":"This vulnerability allows a remote attacker to cause a denial of service or execute arbitrary code by exploiting a double free and use-after-free flaw in the RdbLoadDeletedNodes function of FalkorDB before 4.18.1.","exploitability":"Exploitation requires the ability to issue Redis replication commands, which can be difficult if the server is properly secured with a password.","blast_radius":"If exploited, this could lead to a complete denial of service or execution of arbitrary code on the redis-server process.","remediation":"Upgrade to FalkorDB 4.18.1 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","dos","redis"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-09T08:43:21.638Z"}}