CVE-2026-116073
Leon before commit 50df142 Path Traversal via /download model Command
leon-ai leon
CVSS
6.9MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
What fixes it
- 50df142a89a0859e5b7283d87afdab7b01e712a2leonCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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.
Text from CVE List
Affected versions 1
- leonaffected: a3afdef81c8dd085b922f5a4e6b68bb9b9d802e4 before 50df142a89a0859e5b7283d87afdab7b01e712a2CVE List
References 6
- github.com/leon-ai/leon/pull/594Fixvia CVE List
- github.com/leon-ai/leon/commit/50df142a89a0859e5b7283d87afdab7b01e712a2Fixvia CVE List
- vulncheck.com/advisories/leon-before-commit-50df142-path-traversal-via-download-model-commandAdvisoryvia CVE List
- github.com/leon-ai/leon/issues/593Referencevia CVE List
- github.com/leon-ai/leonReferencevia CVE List
- github.com/leon-ai/leon/blob/21baf11714f618a9367f25882e59e856d3308037/server/src/built-in-command/commands/download-command/download-command.ts#L21-L28Referencevia CVE List