CVE-2026-5759 (GCVE-0-2026-5759)
Vulnerability from cvelistv5
Published
2026-10-09 04:04
Modified
2026-10-13 17:01
Severity ?
9.3 (Critical) - 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
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VLAI Severity ?
EPSS score ?
Summary
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.
References
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-5759",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-13T15:28:40.207197Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-13T17:01:45.296Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"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": "2026-10-13T17:01:45.296Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-5759\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-13T15:28:40.207197Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-13T15:28:40.918Z\"}}], \"cna\": {\"title\": \"Double free and use-after-free in FalkorDB RdbLoadDeletedNodes allows remote code execution via crafted RDB\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Arjun Basnet from Securin\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"version\": \"4.0\", \"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\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"version\": \"3.1\", \"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\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/FalkorDB/FalkorDB\", \"vendor\": \"FalkorDB\", \"modules\": [\"RDB serializer / graph decoder\"], \"product\": \"FalkorDB\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"4.18.1\", \"versionType\": \"semver\"}], \"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\"], \"collectionURL\": \"https://github.com/FalkorDB/FalkorDB\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"RdbLoadDeletedNodes_v17\"}, {\"name\": \"RdbLoadDeletedNodes_v18\"}, {\"name\": \"RdbLoadDeletedNodes_v19\"}]}], \"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\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade FalkorDB to version 4.18.1 or later.\"}], \"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\"]}], \"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.\"}], \"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.\"}], \"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\"}]}], \"providerMetadata\": {\"orgId\": \"33c584b5-0579-4c06-b2a0-8d8329fcab9c\", \"shortName\": \"securin\", \"dateUpdated\": \"2026-10-09T04:04:28.078Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-5759\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-13T17:01:45.296Z\", \"dateReserved\": \"2026-04-07T17:26:12.107Z\", \"assignerOrgId\": \"33c584b5-0579-4c06-b2a0-8d8329fcab9c\", \"datePublished\": \"2026-10-09T04:04:28.078Z\", \"assignerShortName\": \"securin\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…