CVE-2026-92786
Severity CVSS v4.0:
HIGH
Type:
CWE-787
Out-of-bounds Write
Publication date:
16/09/2026
Last modified:
24/09/2026
Description
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.
Impact
Base Score 4.0
8.50
Severity 4.0
HIGH
Base Score 3.x
7.80
Severity 3.x
HIGH
References to Advisories, Solutions, and Tools
- https://github.com/lightgbm-org/LightGBM
- https://github.com/lightgbm-org/LightGBM/blob/v4.6.0/include/LightGBM/tree.h#L691-L698
- https://github.com/lightgbm-org/LightGBM/blob/v4.6.0/src/io/tree.cpp#L750-L766
- https://github.com/lightgbm-org/LightGBM/issues/7357
- https://www.vulncheck.com/advisories/lightgbm-through-4.7.0-out-of-bounds-write-via-crafted-model