MCP, MCP server
browden
A local, cross-platform MCP shell that puts mechanical gates between an LLM agent and a real Chrome browser.
Compatibility: Not stated.
Grade C
One Medium finding. Read the report before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
SECRETS_PATH_CREDENTIAL
Why this grade
- SECRETS_PATH_CREDENTIAL Medium
Mentions a credential store path (~/.ssh, id_rsa, .npmrc, .aws/credentials, credentials.json, .netrc).
browden/mcp/validator/write_gates.py, line 211
"exfiltrate ``~/.ssh/id_rsa`` to host X", and the tool is an arbitrary
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Note
requests shell access. The manifest names this permission.
PERMISSION_SHELL_DECLARED
browden/web_navigator/selenium_chrome/backend.py, line 257
def _wait_for_devtools(port: int, proc: subprocess.Popen, timeout: float = DEVTOOLS_WAIT_SECONDS) -> None:
browden/web_navigator/selenium_chrome/backend.py, line 280
def _terminate(proc: subprocess.Popen | None) -> None:
browden/web_navigator/selenium_chrome/backend.py, line 294
def _launch_chrome(profile_dir: Path) -> tuple[subprocess.Popen, int]:
Show more
browden/web_navigator/selenium_chrome/backend.py, line 303
proc = subprocess.Popen(args, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
perf_benchmark/mem_profile.py, line 109
return subprocess.run(["sysctl", "-n", "machdep.cpu.brand_string"],
perf_benchmark/mem_profile.py, line 120
out = subprocess.run(["dmidecode", "-t", "memory"],
setup/installers.py, line 32
return subprocess.run(cmd, check=check, env=env)
setup/installers.py, line 95
state = subprocess.run(
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
browden/web_navigator/selenium_chrome/backend.py, line 272
with urllib.request.urlopen(url, timeout=1) as resp:
setup/fetch_psl.py, line 36
def fetch(out_path: Path, url: str = PSL_URL,
setup/fetch_psl.py, line 44
with urllib.request.urlopen(url, timeout=60) as resp:
Show more
setup/fetch_psl.py, line 69
fetch(out, args.url, allowlist_path=allowlist)
setup/fetch_tranco.py, line 96
with urllib.request.urlopen(url, timeout=30) as resp:
setup/fetch_tranco.py, line 113
def fetch(top_n: int, out_path: Path, url: str | None = None,
setup/fetch_tranco.py, line 132
with urllib.request.urlopen(url, timeout=120) as resp:
setup/fetch_tranco.py, line 171
fetch(args.top_n, out, args.url, allowlist_path=allowlist)
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_CREDENTIAL
browden/mcp/validator/write_gates.py, line 211
"exfiltrate ``~/.ssh/id_rsa`` to host X", and the tool is an arbitrary
CHANGELOG.md, line 107
Without it, "upload to host X" would mean "exfiltrate `~/.ssh/id_rsa` to host
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Pass
No encoded or minified payload found.
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit 9090d2d804fc. requests shell access. The manifest names this permission. can reach a host that is not written as a fixed address. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: 9090d2d804fc4e46919b9f5e82b24c6e821a3450
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