CVE-2026-116073
Leon before commit 50df142 Path Traversal via /download model Command
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 |
| Vendor | leon-ai |
| Product | leon |
| Published | Oct 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
leon-ai / leon
a3afdef81c8dd085b922f5a4e6b68bb9b9d802e4 < 50df142a89a0859e5b7283d87afdab7b01e712a2
References
github.com: https://github.com/leon-ai/leon/issues/593 github.com: https://github.com/leon-ai/leon github.com: https://github.com/leon-ai/leon/blob/21baf11714f618a9367f25882e59e856d3308037/server/src/built-in-command/commands/download-command/download-command.ts#L21-L28 github.com: https://github.com/leon-ai/leon/pull/594 github.com: https://github.com/leon-ai/leon/commit/50df142a89a0859e5b7283d87afdab7b01e712a2 vulncheck.com: https://www.vulncheck.com/advisories/leon-before-commit-50df142-path-traversal-via-download-model-command
Credits
George Chen