PYSEC-2026-4010 Arbitrary file read via workspace confinement bypass in local-operator /v1/chat/agents/{id}/edit
Unauthenticated attackers can read arbitrary files from the server via path traversal in the local-operator API, exposing sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is PYSEC-2026-4010?
PYSEC-2026-4010 is a path traversal vulnerability in local-operator, published on 5 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The /v1/chat/agents/{agent_id}/edit endpoint in local-operator versions before 0.47.5 resolves the caller-supplied file_path with expanduser().resolve() and reads it without checking that it lies inside the agent's workspace. An unauthenticated client with network access to the API can supply an absolute path or a path containing traversal sequences and obtain the contents of any file readable by the server process, which are placed in the model prompt and returned in the response.
Version 0.47.5 resolves server-side reads within the agent's configured workspace and rejects canonical paths outside it (including symlink and junction escapes) before any model call, adds an optional file_content request field so clients can submit a buffer without host path resolution, and binds lop serve to 127.0.0.1 by default.
Which versions are affected by PYSEC-2026-4010?
1 open source package ship an affected version, including local-operator.
| Package | Affected | Fixed in |
|---|---|---|
local-operator PyPI | All versions | 0.47.5 |
How do I fix PYSEC-2026-4010?
Upgrade local-operator to 0.47.5 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is PYSEC-2026-4010 being exploited?
There is no known exploitation of PYSEC-2026-4010 in the wild and no public exploit code.
Sources
Also known as GHSA-3xjw-9qpc-53mh.