[ CVE-2026-116073 · Published 25 Oct 2026 ]
Vulnerability in leon-ai leon
CVSS 6.5
No fix listed yet
[ Description ]Official 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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.
[ References ]References
- github.com/leon-ai/leon
- github.com/leon-ai/leon/blob/21baf11714f618a9367f25882e59e856d3308037/server/src/built-…
- github.com/leon-ai/leon/commit/50df142a89a0859e5b7283d87afdab7b01e712a2
- github.com/leon-ai/leon/issues/593
- github.com/leon-ai/leon/pull/594
- www.vulncheck.com/advisories/leon-before-commit-50df142-path-traversal-via-download-mod…