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[GHSA-fhjh-xqqj-cjf5] LightGBM through 4.7.0 fails to validate child and split... #9856

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[GHSA-fhjh-xqqj-cjf5] LightGBM through 4.7.0 fails to validate child and split... #9856

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39 changes: 32 additions & 7 deletions advisories/unreviewed/2026/09/GHSA-fhjh-xqqj-cjf5/GHSA-fhjh-xqqj-cjf5.json
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Original file line number Diff line number Diff line change
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{
"schema_version": "1.4.0",
"id": "GHSA-fhjh-xqqj-cjf5",
"modified": "2026-09-16T21:32:55Z",
"modified": "2026-09-16T21:32:56Z",
"published": "2026-09-16T21:32:55Z",
"aliases": [
"CVE-2026-92786"
],
"summary": "LightGBM crafted text models can trigger out-of-bounds memory writes during prediction",
"details": "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.",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "lightgbm"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "4.7.0"
}
]
}
]
}
],
"affected": [],
"references": [
{
"type": "ADVISORY",
Expand All @@ -27,6 +44,10 @@
"type": "WEB",
"url": "https://github.com/lightgbm-org/LightGBM/issues/7357"
},
{
"type": "WEB",
"url": "https://github.com/lightgbm-org/LightGBM/pull/7366"
},
{
"type": "WEB",
"url": "https://github.com/lightgbm-org/LightGBM"
Expand All @@ -39,6 +60,10 @@
"type": "WEB",
"url": "https://github.com/lightgbm-org/LightGBM/blob/v4.6.0/src/io/tree.cpp#L750-L766"
},
{
"type": "PACKAGE",
"url": "https://github.com/lightgbm-org/LightGBM/blob/v4.7.0/src/io/tree.cpp#L757-L769"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/lightgbm-through-4.7.0-out-of-bounds-write-via-crafted-model"
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