{"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":"2026-09-21","sourceUpdated":"2026-09-21T16:17:27.243","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"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-21T15:44:38.629081Z"},"epss":0.00127,"epssPercentile":0.02749,"ingestedAt":"2026-09-16T21:05:36.888Z","slug":"CVE-2026-92786","body":"## Overview\n\nLightGBM 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}