{"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"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92786.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-92786"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535687"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92786"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92786"},{"url":"https://access.redhat.com/errata/RHSA-2026:84734"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00186,"epssPercentile":0.08158,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-21T15:44:38.629081Z"},"ingestedAt":"2026-09-16T21:05:36.888Z","patched":["openshift_ai 3.4"],"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.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat OpenShift AI (RHOAI) · no fix planned: Red Hat OpenShift AI (RHOAI) · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92786.json)\n- **RHSA-2026:84734** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84734)","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}