{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.20.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a1d0074f4849b487e270ee635a05d1f85922ce68"
            },
            {
              "fixed": "0b11a00b34b25c4d4fdfe55f0a35c8a00593bd7d"
            }
          ],
          "repo": "https://github.com/falkordb/falkordb",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {},
  "details": "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.",
  "id": "CVE-2026-107908",
  "modified": "2026-10-10T02:31:07.627812440Z",
  "published": "2026-10-09T06:17:10.777Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/FalkorDB/FalkorDB/releases/tag/v4.20.0"
    },
    {
      "type": "FIX",
      "url": "https://github.com/FalkorDB/FalkorDB/commit/0b11a00b34b25c4d4fdfe55f0a35c8a00593bd7d"
    },
    {
      "type": "FIX",
      "url": "https://github.com/FalkorDB/FalkorDB/pull/2170"
    }
  ],
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}