{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-107908",
        "assignerOrgId": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
        "state": "PUBLISHED",
        "assignerShortName": "securin",
        "dateReserved": "2026-10-09T04:54:39.618Z",
        "datePublished": "2026-10-09T05:08:06.419Z",
        "dateUpdated": "2026-10-15T15:48:53.580Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
                "shortName": "securin",
                "dateUpdated": "2026-10-09T05:08:06.419Z"
            },
            "title": "Pre-authentication heap out-of-bounds write in FalkorDB Bolt BoltReadHandler via RESET message",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A heap-based out-of-bounds write in the BoltReadHandler function (src/bolt/bolt_api.c) in FalkorDB before 4.20.0 allows a remote unauthenticated attacker to cause a denial of service and possibly execute arbitrary code by sending a Bolt RESET message with an attacker-chosen chunk size to the Bolt port. The handler checks the size only with ASSERT(), which is compiled out in release builds, then computes a destination pointer from the wire-supplied 16-bit size and moves buffered data up to about 64 KiB backwards past the start of the read buffer. Only deployments that enable the Bolt endpoint (BOLT_PORT, disabled by default) are affected."
                }
            ],
            "affected": [
                {
                    "vendor": "FalkorDB",
                    "product": "FalkorDB",
                    "collectionURL": "https://github.com/FalkorDB/FalkorDB",
                    "repo": "https://github.com/FalkorDB/FalkorDB",
                    "modules": [
                        "Bolt protocol endpoint"
                    ],
                    "programFiles": [
                        "src/bolt/bolt_api.c"
                    ],
                    "programRoutines": [
                        {
                            "name": "BoltReadHandler"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*"
                    ],
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "4.20.0",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "type": "CWE",
                            "cweId": "CWE-787",
                            "description": "CWE-787 Out-of-bounds Write"
                        }
                    ]
                }
            ],
            "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 4.20.0 or later. Bolt protocol support, including the code affected by this issue, was removed in 4.20.0."
                }
            ],
            "workarounds": [
                {
                    "lang": "en",
                    "value": "Leave the Bolt endpoint disabled (do not set the BOLT_PORT module configuration; it is disabled by default), or restrict network access to the Bolt port to trusted clients."
                }
            ],
            "references": [
                {
                    "url": "https://github.com/FalkorDB/FalkorDB/pull/2170",
                    "name": "FalkorDB PR #2170",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "url": "https://github.com/FalkorDB/FalkorDB/commit/0b11a00b34b25c4d4fdfe55f0a35c8a00593bd7d",
                    "name": "Fix commit",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "url": "https://github.com/FalkorDB/FalkorDB/releases/tag/v4.20.0",
                    "name": "FalkorDB 4.20.0 release notes",
                    "tags": [
                        "release-notes"
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Arjun Basnet from Securin"
                }
            ],
            "timeline": [
                {
                    "time": "2026-06-29T00:00:00.000Z",
                    "lang": "en",
                    "value": "Reported to FalkorDB"
                },
                {
                    "time": "2026-06-29T00:00:00.000Z",
                    "lang": "en",
                    "value": "Vendor acknowledged the report"
                },
                {
                    "time": "2026-07-08T00:00:00.000Z",
                    "lang": "en",
                    "value": "Vendor removed Bolt protocol support (PR #2170)"
                },
                {
                    "time": "2026-07-13T00:00:00.000Z",
                    "lang": "en",
                    "value": "FalkorDB 4.20.0 released without Bolt support"
                },
                {
                    "time": "2026-09-27T00:00:00.000Z",
                    "lang": "en",
                    "value": "Coordinated disclosure period ended"
                }
            ],
            "source": {
                "discovery": "EXTERNAL"
            },
            "impacts": [
                {
                    "capecId": "CAPEC-100",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-100 Overflow Buffers"
                        }
                    ]
                }
            ]
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-15T15:48:41.634481Z",
                                "id": "CVE-2026-107908",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-15T15:48:53.580Z"
                }
            }
        ]
    }
}