{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5759", "assignerOrgId": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "state": "PUBLISHED", "assignerShortName": "securin", "dateReserved": "2026-04-07T17:26:12.107Z", "datePublished": "2026-10-09T04:04:28.078Z", "dateUpdated": "2026-10-09T04:04:28.078Z"}, "containers": {"cna": {"title": "Double free and use-after-free in FalkorDB RdbLoadDeletedNodes allows remote code execution via crafted RDB", "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"vendor": "FalkorDB", "product": "FalkorDB", "collectionURL": "https://github.com/FalkorDB/FalkorDB", "repo": "https://github.com/FalkorDB/FalkorDB", "modules": ["RDB serializer / graph decoder"], "programFiles": ["src/serializers/decoders/current/v19/decode_graph_entities.c", "src/serializers/decoders/prev/v18/decode_graph_entities.c", "src/serializers/decoders/prev/v17/decode_graph_entities.c"], "programRoutines": [{"name": "RdbLoadDeletedNodes_v17"}, {"name": "RdbLoadDeletedNodes_v18"}, {"name": "RdbLoadDeletedNodes_v19"}], "cpes": ["cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "versions": [{"version": "0", "lessThan": "4.18.1", "status": "affected", "versionType": "semver"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-415", "description": "CWE-415 Double Free"}, {"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "baseScore": 9.3, "baseSeverity": "CRITICAL"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}}], "solutions": [{"lang": "en", "value": "Upgrade FalkorDB to version 4.18.1 or later."}], "workarounds": [{"lang": "en", "value": "Require authentication on the Redis/FalkorDB instance (requirepass or ACLs), restrict or rename the REPLICAOF/SLAVEOF commands so untrusted clients cannot use them, and do not expose the instance to untrusted networks."}], "references": [{"url": "https://github.com/FalkorDB/FalkorDB/pull/1843", "name": "FalkorDB PR #1843", "tags": ["patch"]}, {"url": "https://github.com/FalkorDB/FalkorDB/commit/523d98ac7ffe99f11a9c95c258025c235f0dff4c", "name": "Fix commit", "tags": ["patch"]}, {"url": "https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.1", "name": "FalkorDB 4.18.1 release notes", "tags": ["release-notes"]}], "credits": [{"lang": "en", "type": "finder", "value": "Arjun Basnet from Securin"}], "timeline": [{"time": "2026-04-07T00:00:00.000Z", "lang": "en", "value": "Reported to FalkorDB"}, {"time": "2026-04-10T00:00:00.000Z", "lang": "en", "value": "Fix merged by the vendor (PR #1843)"}, {"time": "2026-04-12T00:00:00.000Z", "lang": "en", "value": "FalkorDB 4.18.1 released with the fix"}, {"time": "2026-04-13T00:00:00.000Z", "lang": "en", "value": "CVE ID shared with the vendor"}], "source": {"discovery": "EXTERNAL"}, "providerMetadata": {"orgId": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "shortName": "securin", "dateUpdated": "2026-10-09T04:04:28.078Z"}}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://github.com/FalkorDB/FalkorDB", "cpes": ["cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["RDB serializer / graph decoder"], "product": "FalkorDB", "programFiles": ["src/serializers/decoders/current/v19/decode_graph_entities.c", "src/serializers/decoders/prev/v18/decode_graph_entities.c", "src/serializers/decoders/prev/v17/decode_graph_entities.c"], "programRoutines": [{"name": "RdbLoadDeletedNodes_v17"}, {"name": "RdbLoadDeletedNodes_v18"}, {"name": "RdbLoadDeletedNodes_v19"}], "repo": "https://github.com/FalkorDB/FalkorDB", "vendor": "FalkorDB", "versions": [{"lessThan": "4.18.1", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-5759", "lastModified": "2026-10-09T05:16:45.043", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary"}]}, "published": "2026-10-09T05:16:44.920", "references": [{"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "url": "https://github.com/FalkorDB/FalkorDB/commit/523d98ac7ffe99f11a9c95c258025c235f0dff4c"}, {"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "url": "https://github.com/FalkorDB/FalkorDB/pull/1843"}, {"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "url": "https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.1"}], "sourceIdentifier": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-415"}, {"lang": "en", "value": "CWE-416"}], "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.18.1)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "FalkorDB", "source": "cna", "vendor": "FalkorDB"}, "product": "falkordb", "vendor": "falkordb"}], "created": "2026-10-09T05:30:08.765812+00:00", "updated": "2026-10-09T07:30:17.904592+00:00", "vendors": ["falkordb", "falkordb$PRODUCT$falkordb"]}