{"affected":[{"defaultStatus":"unaffected","product":"leon","source":"CNA: VulnCheck","vendor":"leon-ai","versions":[{"lessThan":"50df142a89a0859e5b7283d87afdab7b01e712a2","status":"affected","version":"a3afdef81c8dd085b922f5a4e6b68bb9b9d802e4","versionType":"git"}]}],"cveId":"CVE-2026-116073","cwes":["CWE-22"],"description":"Leon before commit 50df142 contains a path traversal vulnerability in getModelFileNameFromURL() that allows attackers to write files outside the models directory via percent-encoded separators. Attackers can trick a user into running '/download model' with a crafted URL containing encoded '../' sequences to write attacker-controlled content to arbitrary paths writable by Leon.","epss":{"date":"2026-11-05","percentile":0.25686,"score":0.00325},"exploits":[],"kev":null,"metrics":[{"score":6.9,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":6.5,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"},{"score":6.9,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/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","version":"4.0"},{"score":6.5,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"}],"modifiedAt":1793895454660,"publishedAt":1792929060624,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/leon-ai/leon/issues/593"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://github.com/leon-ai/leon"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/leon-ai/leon/blob/21baf11714f618a9367f25882e59e856d3308037/server/src/built-in-command/commands/download-command/download-command.ts#L21-L28"},{"source":"CNA: VulnCheck","tags":["patch","issue-tracking"],"url":"https://github.com/leon-ai/leon/pull/594"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/leon-ai/leon/commit/50df142a89a0859e5b7283d87afdab7b01e712a2"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/leon-before-commit-50df142-path-traversal-via-download-model-command"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/leon-ai/leon"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/leon-ai/leon/blob/21baf11714f618a9367f25882e59e856d3308037/server/src/built-in-command/commands/download-command/download-command.ts#L21-L28"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/leon-ai/leon/commit/50df142a89a0859e5b7283d87afdab7b01e712a2"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/leon-ai/leon/issues/593"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/leon-ai/leon/pull/594"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/leon-before-commit-50df142-path-traversal-via-download-model-command"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/leon-ai/leon/pull/594"},{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/leon-ai/leon/commit/50df142a89a0859e5b7283d87afdab7b01e712a2"}],"revision":"9d958fc9dc5264799089e1b30641c261742c529fc8db2d40f0a201b892bd50f3","sources":[{"modifiedAt":1793893903922,"name":"CNA: VulnCheck","retrievedAt":1793895288598,"url":"https://www.cve.org/CVERecord?id=CVE-2026-116073"},{"modifiedAt":1793895454660,"name":"NVD","retrievedAt":1793902889466,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116073"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793895313610,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-116073"}],"ssvc":{"assessedAt":1793893893261,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Leon before commit 50df142 Path Traversal via /download model Command","updatedAt":1793902889466}