CVE-2026-116073

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/leon-ai/leon
https://github.com/leon-ai/leon/blob/21baf11714f618a9367f25882e59e856d3308037/server/src/built-in-command/commands/download-command/download-command.ts#L21-L28
https://github.com/leon-ai/leon/commit/50df142a89a0859e5b7283d87afdab7b01e712a2
https://github.com/leon-ai/leon/issues/593
https://github.com/leon-ai/leon/pull/594
https://www.vulncheck.com/advisories/leon-before-commit-50df142-path-traversal-via-download-model-command

Configurations

No configuration.

History

25 Oct 2026, 12:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-25 12:16

Updated : 2026-10-26 17:01

NVD link : CVE-2026-116073

Mitre link : CVE-2026-116073

CVE.ORG link : CVE-2026-116073

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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