LiteLLM Skills archive extraction did not sufficiently validate file paths from uploaded skill ZIP archives. An authenticated user with access to LiteLLM LLM API routes, or a key whose allowed_routes includes /v1/skills, anthropic_routes, or llm_api_routes, could upload a crafted skill archive containing path traversal entries.
When the skill was processed for execution, those entries could be written outside the intended extraction/staging directory. This could allow arbitrary file write and may lead to code execution depending on deployment configuration and writable paths.
The issue is fixed in 1.83.7-stable.
LiteLLM recommens upgrading to 1.83.7-stable or later.
If upgrading is not immediately possible:
POST /v1/skills at your reverse proxy or API gateway.{
"cwe_ids": [
"CWE-22"
],
"github_reviewed": true,
"github_reviewed_at": "2026-07-22T22:37:15Z",
"nvd_published_at": "2026-07-08T20:16:57Z",
"severity": "MODERATE"
}