Medium 6.5Published Oct 25, 2026

CVE-2026-116073Leon before commit 50df142 Path Traversal via /download model Command

Updated under an hour ago (Oct 28, 2026, 12:50 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for leon-ai leon

Exploited in the last 30 days

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: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 25, 2026
First seen by InfoSec Signals: Oct 25, 2026

Affected products

Affected products

leon-ai leon leon_ai:leon (from the name)	from a3afdef81c8dd085b922f5a4e6b68bb9b9d802e4 before 50df142a89a0859e5b7283d87afdab7b01e712a2	CNA record

References

References

https://github.com/leon-ai/leon/issues/593	issue-tracking
https://github.com/leon-ai/leon	product
https://github.com/leon-ai/leon/blob/21baf11714f618a9367f25882e59e856d3308037/server/src/built-in-command/commands/download-command/download-command.ts#L21-L28	technical-description
https://github.com/leon-ai/leon/pull/594	patch, issue-tracking
https://github.com/leon-ai/leon/commit/50df142a89a0859e5b7283d87afdab7b01e712a2	patch
https://www.vulncheck.com/advisories/leon-before-commit-50df142-path-traversal-via-download-model-command	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.