{"api_version":"1","generated_at":"2026-10-09T07:47:55+00:00","cve":"CVE-2026-5759","urls":{"html":"https://cve.report/CVE-2026-5759","api":"https://cve.report/api/cve/CVE-2026-5759.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-5759","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-5759"},"summary":{"title":"Double free and use-after-free in FalkorDB RdbLoadDeletedNodes allows remote code execution via crafted RDB","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.","state":"PUBLISHED","assigner":"securin","published_at":"2026-10-09 05:16:44","updated_at":"2026-10-09 05:16:45"},"problem_types":["CWE-415","CWE-416","CWE-415 CWE-415 Double Free","CWE-416 CWE-416 Use After Free"],"metrics":[{"version":"4.0","source":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","type":"Secondary","score":"9.3","severity":"CRITICAL","vector":"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","data":{"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/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","baseScore":9.3,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"CVSS","score":"9.3","severity":"CRITICAL","vector":"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","data":{"baseScore":9.3,"baseSeverity":"CRITICAL","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","version":"4.0"}},{"version":"3.1","source":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","type":"Secondary","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"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","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://github.com/FalkorDB/FalkorDB/commit/523d98ac7ffe99f11a9c95c258025c235f0dff4c","name":"https://github.com/FalkorDB/FalkorDB/commit/523d98ac7ffe99f11a9c95c258025c235f0dff4c","refsource":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.1","name":"https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.1","refsource":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/FalkorDB/FalkorDB/pull/1843","name":"https://github.com/FalkorDB/FalkorDB/pull/1843","refsource":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-5759","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5759","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"FalkorDB","product":"FalkorDB","version":"affected 4.18.1 semver","platforms":[]}],"timeline":[{"source":"CNA","time":"2026-04-07T00:00:00.000Z","lang":"en","value":"Reported to FalkorDB"},{"source":"CNA","time":"2026-04-10T00:00:00.000Z","lang":"en","value":"Fix merged by the vendor (PR #1843)"},{"source":"CNA","time":"2026-04-12T00:00:00.000Z","lang":"en","value":"FalkorDB 4.18.1 released with the fix"},{"source":"CNA","time":"2026-04-13T00:00:00.000Z","lang":"en","value":"CVE ID shared with the vendor"}],"solutions":[{"source":"CNA","title":"","value":"Upgrade FalkorDB to version 4.18.1 or later.","time":"","lang":"en"}],"workarounds":[{"source":"CNA","title":"","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.","time":"","lang":"en"}],"exploits":[],"credits":[{"source":"CNA","value":"Arjun Basnet from Securin","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"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"}]}],"credits":[{"lang":"en","type":"finder","value":"Arjun Basnet from Securin"}],"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."}],"metrics":[{"cvssV4_0":{"baseScore":9.3,"baseSeverity":"CRITICAL","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","version":"4.0"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV3_1":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-415","description":"CWE-415 Double Free","lang":"en","type":"CWE"},{"cweId":"CWE-416","description":"CWE-416 Use After Free","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-09T04:04:28.078Z","orgId":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","shortName":"securin"},"references":[{"name":"FalkorDB PR #1843","tags":["patch"],"url":"https://github.com/FalkorDB/FalkorDB/pull/1843"},{"name":"Fix commit","tags":["patch"],"url":"https://github.com/FalkorDB/FalkorDB/commit/523d98ac7ffe99f11a9c95c258025c235f0dff4c"},{"name":"FalkorDB 4.18.1 release notes","tags":["release-notes"],"url":"https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.1"}],"solutions":[{"lang":"en","value":"Upgrade FalkorDB to version 4.18.1 or later."}],"source":{"discovery":"EXTERNAL"},"timeline":[{"lang":"en","time":"2026-04-07T00:00:00.000Z","value":"Reported to FalkorDB"},{"lang":"en","time":"2026-04-10T00:00:00.000Z","value":"Fix merged by the vendor (PR #1843)"},{"lang":"en","time":"2026-04-12T00:00:00.000Z","value":"FalkorDB 4.18.1 released with the fix"},{"lang":"en","time":"2026-04-13T00:00:00.000Z","value":"CVE ID shared with the vendor"}],"title":"Double free and use-after-free in FalkorDB RdbLoadDeletedNodes allows remote code execution via crafted RDB","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."}]}},"cveMetadata":{"assignerOrgId":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","assignerShortName":"securin","cveId":"CVE-2026-5759","datePublished":"2026-10-09T04:04:28.078Z","dateReserved":"2026-04-07T17:26:12.107Z","dateUpdated":"2026-10-09T04:04:28.078Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-09 05:16:44","lastModifiedDate":"2026-10-09 05:16:45","problem_types":["CWE-415","CWE-416","CWE-415 CWE-415 Double Free","CWE-416 CWE-416 Use After Free"],"metrics":{"cvssMetricV40":[{"source":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","type":"Secondary","cvssData":{"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/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","baseScore":9.3,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","type":"Secondary","cvssData":{"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","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"5759","Ordinal":"1","Title":"Double free and use-after-free in FalkorDB RdbLoadDeletedNodes a","CVE":"CVE-2026-5759","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"5759","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Double free and use-after-free in FalkorDB RdbLoadDeletedNodes a"}]}}}