{"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"}}]}}

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