MCP, MCP server
cerno
cerno, an MCP server listed in the PlugVet directory.
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
PERMISSION_DELETE_FILES INSTALL_UNPINNED NETWORK_NO_FIXED_HOST SECRETS_PATH_UNCONFIRMED OBFUSCATION_FILE_OVER_READ_CAP
Why this grade
- PERMISSION_DELETE_FILES Low
Contains a call that can delete files.
cerno.py, line 3117
shutil.rmtree(directory) - INSTALL_UNPINNED Low
Dependencies use a range or git URL with no lockfile.
requirements.txt, line 1
rich>=13.7,<15 - NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
cerno_pkg/ops.py, line 963
return f"curl -sk https://{server_ip}:{server_port}/targets.txt | " + " ".join( - SECRETS_PATH_UNCONFIRMED Low
The Secrets check reports a credential or environment file, but no quoted line shows a recognisable path.
.gitignore, line 27
.venv/ - OBFUSCATION_FILE_OVER_READ_CAP Note
A file was over the read cap and was not fully read.
tests/fixtures/GOAD.nessus, line 1
<?xml version="1.0" encoding="UTF-8"?>
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
Concern
can delete files.
PERMISSION_DELETE_FILES
cerno.py, line 3117
shutil.rmtree(directory)
cerno_pkg/claude_assistant.py, line 326
result = subprocess.run(
cerno_pkg/ops.py, line 148
check_result = subprocess.run(
Show more
cerno_pkg/ops.py, line 164
subprocess.run(["sudo", "-v"], check=True)
cerno_pkg/ops.py, line 210
proc = subprocess.Popen(
cerno_pkg/ops.py, line 218
proc = subprocess.Popen(
cerno_pkg/ops.py, line 307
check = subprocess.run(
cerno_pkg/ops.py, line 332
proc = subprocess.run(
cerno_pkg/ops.py, line 454
result = subprocess.run(
cerno_pkg/ops.py, line 901
shutil.rmtree(tmpdir, ignore_errors=True)
cerno_pkg/ops.py, line 906
shutil.rmtree(tmpdir, ignore_errors=True)
cerno_pkg/ops.py, line 926
shutil.rmtree(tmpdir, ignore_errors=True)
Install and update
Concern
dependencies are not pinned.
INSTALL_UNPINNED
requirements.txt, line 1
rich>=13.7,<15
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
cerno_pkg/ops.py, line 963
return f"curl -sk https://{server_ip}:{server_port}/targets.txt | " + " ".join(
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_UNCONFIRMED
.gitignore, line 27
.venv/
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Note
a file was over the read cap and was not fully read.
OBFUSCATION_FILE_OVER_READ_CAP
tests/fixtures/GOAD.nessus, line 1
<?xml version="1.0" encoding="UTF-8"?>
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 fc778118d5fa. can delete files. dependencies are not pinned. can reach a host that is not written as a fixed address. reads a credential or environment file. a file was over the read cap and was not fully read.
Date and source
Date checked:
github.com
Commit graded: fc778118d5fa9174eaa268c3320439c236b4b9c9
This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.