CVE-2026-107910 (GCVE-0-2026-107910)

Vulnerability from cvelistv5 – Published: 2026-10-09 05:08 – Updated: 2026-10-09 05:08
VLAI
Title
Authentication bypass in FalkorDB Bolt endpoint via fail-open AUTH probe error handling
Summary
An improper authentication vulnerability in the is_authenticated function (src/bolt/bolt_api.c) in FalkorDB before 4.20.0 allows a remote unauthenticated attacker to execute graph queries without credentials through the Bolt endpoint. The function decides whether a password is required by issuing an empty AUTH command to Redis and treats only a WRONGPASS error as meaning that a password is required; any other error, such as LOADING while a dataset is being loaded, MASTERDOWN during replication failover, or OOM under memory pressure, causes the client to be treated as authenticated. Only deployments that enable the Bolt endpoint (BOLT_PORT, disabled by default) are affected.
Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-287 - Improper Authentication
Assigner
securin CNA under the mitre root
CNA scorecard B 80/100 over 70 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
FalkorDB FalkorDB Affected: 0 , < 4.20.0 (semver)
    cpe:2.3:a:falkordb:falkordb:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Arjun Basnet from Securin
Show details on NVD website
To clipboard 

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          "cpes": [
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          ],
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          "modules": [
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          "programFiles": [
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          "value": "An improper authentication vulnerability in the is_authenticated function (src/bolt/bolt_api.c) in FalkorDB before 4.20.0 allows a remote unauthenticated attacker to execute graph queries without credentials through the Bolt endpoint. The function decides whether a password is required by issuing an empty AUTH command to Redis and treats only a WRONGPASS error as meaning that a password is required; any other error, such as LOADING while a dataset is being loaded, MASTERDOWN during replication failover, or OOM under memory pressure, causes the client to be treated as authenticated. Only deployments that enable the Bolt endpoint (BOLT_PORT, disabled by default) are affected."
        }
      ],
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          "descriptions": [
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        "shortName": "securin"
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          "name": "FalkorDB PR #2170",
          "tags": [
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          "url": "https://github.com/FalkorDB/FalkorDB/pull/2170"
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          "url": "https://github.com/FalkorDB/FalkorDB/commit/0b11a00b34b25c4d4fdfe55f0a35c8a00593bd7d"
        },
        {
          "name": "FalkorDB 4.20.0 release notes",
          "tags": [
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          "url": "https://github.com/FalkorDB/FalkorDB/releases/tag/v4.20.0"
        }
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      "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."
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      ],
      "source": {
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          "time": "2026-06-29T00:00:00.000Z",
          "value": "Reported to FalkorDB"
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          "time": "2026-06-29T00:00:00.000Z",
          "value": "Vendor acknowledged the report"
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          "time": "2026-07-08T00:00:00.000Z",
          "value": "Vendor removed Bolt protocol support (PR #2170)"
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        {
          "lang": "en",
          "time": "2026-07-13T00:00:00.000Z",
          "value": "FalkorDB 4.20.0 released without Bolt support"
        },
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          "lang": "en",
          "time": "2026-09-27T00:00:00.000Z",
          "value": "Coordinated disclosure period ended"
        }
      ],
      "title": "Authentication bypass in FalkorDB Bolt endpoint via fail-open AUTH probe error handling",
      "workarounds": [
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        }
      ]
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    "dateReserved": "2026-10-09T04:54:55.521Z",
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    "state": "PUBLISHED"
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          }
        ],
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                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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