lightgbm-org LightGBM up to 4.7.0 out-of-bounds write

Summaryinfo

A vulnerability has been found in lightgbm-org LightGBM up to 4.7.0 and classified as problematic. The impacted element is an unknown function. This manipulation causes out-of-bounds write. This vulnerability is handled as CVE-2026-92786. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic was found in lightgbm-org LightGBM up to 4.7.0. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-92786 since 09/16/2026. The exploitation appears to be easy. Attacking locally is a requirement. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/16/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• lightgbm-org

Name

• LightGBM

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7.0

Website

• Product: https://github.com/lightgbm-org/LightGBM/

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