---
title: "CVE-2026-107908: FalkorDB - Out of Bounds Read/Write"
description: "FalkorDB < 4.20.0 contains a heap-based out-of-bounds write caused by improper size validation in BoltReadHandler, letting remote unauthenticated attackers cause denial of service or execute arbitrary code via crafted Bolt RESET messages, exploit requires Bolt endpoint enabled."
url: https://panop.io/threat-heartbeat/CVE-2026-107908/
---

# CVE-2026-107908 FalkorDB - Out of Bounds Read/Write

FalkorDB < 4.20.0 contains a heap-based out-of-bounds write caused by improper size validation in BoltReadHandler, letting remote unauthenticated attackers cause denial of service or execute arbitrary code via crafted Bolt RESET messages, exploit requires Bolt endpoint enabled.

CVSS base score 9.8 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.60% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-107908)

## Details

Type

Out of Bounds Read/Write

Impact

Denial Of Service, Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

9 October 2026

Updated

15 October 2026

Weakness

[CWE-787](https://cwe.mitre.org/data/definitions/787.html)

## Vendor fix

Update to version 4.20.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-107908](https://nvd.nist.gov/vuln/detail/CVE-2026-107908)
- [https://github.com/FalkorDB/FalkorDB/commit/0b11a00b34b25c4d4fdfe55f0a35c8a00593bd7d](https://github.com/FalkorDB/FalkorDB/commit/0b11a00b34b25c4d4fdfe55f0a35c8a00593bd7d)
- [https://github.com/FalkorDB/FalkorDB/pull/2170](https://github.com/FalkorDB/FalkorDB/pull/2170)
- [https://github.com/FalkorDB/FalkorDB/releases/tag/v4.20.0](https://github.com/FalkorDB/FalkorDB/releases/tag/v4.20.0)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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