Buffer overflow in Lightgbm-Org Lightgbm

CVE-2026-92786

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.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-92786?
CVE-2026-92786 is a high-severity vulnerability in Lightgbm-Org Lightgbm, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-09-16.
How severe is CVE-2026-92786?
High severity. CVSS v3 base score is 7.8 out of 10.