---
id: CVE-2026-92786
title: >-
  LightGBM through 4.7.0 fails to validate child and split array values when
  parsing text models, allowing attackers to write out-of-bounds memory during
  SHAP prediction
summary: >-
  LightGBM through 4.7.0 fails to validate child and split array values when
  parsing text models, allowing attackers to write out-of-bounds memory during
  SHAP prediction. Attackers can craft malicious model files with invalid node
  referenc…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
vendor: lightgbm-org
product: LightGBM
affected:
  - LightGBM <= 4.7.0
published: '2026-09-16'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:04:40.340'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92786'
references:
  - url: 'https://github.com/lightgbm-org/LightGBM'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/lightgbm-org/LightGBM/blob/v4.6.0/include/LightGBM/tree.h#L691-L698
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/lightgbm-org/LightGBM/blob/v4.6.0/src/io/tree.cpp#L750-L766
    label: disclosure@vulncheck.com
  - url: 'https://github.com/lightgbm-org/LightGBM/issues/7357'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/lightgbm-through-4.7.0-out-of-bounds-write-via-crafted-model
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00186
epssPercentile: 0.07283
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-21T15:44:38.629081Z'
ingestedAt: '2026-09-16T21:05:36.888Z'
---

## Overview

LightGBM through 4.7.0 fails to validate child and split array values when parsing text models, allowing attackers to write out-of-bounds memory during SHAP prediction. Attackers can craft malicious model files with invalid node references that trigger out-of-bounds writes at attacker-chosen offsets in the leaf_depth_ buffer during feature contribution computation.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.