MCP, MCP server
Claude Custom Connector Server
Claude Custom Connector Server, an MCP server listed in the PlugVet directory.
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.
INSTALL_REMOTE_SCRIPT
Why this grade
- INSTALL_REMOTE_SCRIPT Medium
Fetches a script from the network and runs it (a pipe to a shell, or an install hook with a URL).
.github/workflows/scanning.yml, line 39
run: curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sh -s -- -b /usr/local/bin
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
Pass
No shell or command execution found, and no extra permission was declared.
Install and update
Serious
install fetches a script from the network.
INSTALL_REMOTE_SCRIPT
.github/workflows/scanning.yml, line 39
run: curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sh -s -- -b /usr/local/bin
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
tools/browser/server.py, line 110
with socket.create_connection(("127.0.0.1", VIEW_PORT), timeout=1):
docker-compose.yml, line 93
test: ["CMD", "python", "-c", "import urllib.request;urllib.request.urlopen('http://127.0.0.1:8071/healthz',timeout=3)"]
docker-compose.yml, line 132
test: ["CMD", "python", "-c", "import urllib.request;urllib.request.urlopen('http://127.0.0.1:8072/healthz',timeout=3)"]
Show more
scripts/templates/Dockerfile.template, line 44
CMD python -c "import os,urllib.request; urllib.request.urlopen('http://127.0.0.1:' + os.environ.get('MCP_PORT','__PORT__') + '/healthz', timeout=4)" || exit 1
security/approval/service/Dockerfile, line 42
CMD python -c "import os,urllib.request;urllib.request.urlopen('http://127.0.0.1:'+os.environ.get('APPROVAL_PORT','8072')+'/healthz',timeout=3)" || exit 1
security/approval/widgets/approve.html, line 173
await fetch(`${PUBLIC_BASE}/approve/${ctx.token}`, {
security/approval/widgets/manage.html, line 455
const resp = await fetch(`${PUBLIC_BASE}/manage/${ctx.token}`, {
security/approval/widgets/manage.html, line 496
const resp = await fetch(`${PUBLIC_BASE}/manage/${ctx.token}`);
security/guardrail/service/Dockerfile, line 62
CMD python -c "import os,urllib.request; urllib.request.urlopen(f\"http://127.0.0.1:{os.environ.get('GUARDRAIL_PORT','8071')}/healthz\", timeout=3)" || exit 1
tools/browser/Dockerfile, line 80
CMD python -c "import os,urllib.request; urllib.request.urlopen('http://127.0.0.1:' + os.environ.get('MCP_PORT','8067') + '/healthz', timeout=4)" || exit 1
tools/gatekeeper/Dockerfile, line 44
CMD python -c "import os,urllib.request; urllib.request.urlopen('http://127.0.0.1:' + os.environ.get('MCP_PORT','8065') + '/healthz', timeout=4)" || exit 1
tools/telegram/Dockerfile, line 60
CMD python -c "import os,urllib.request; urllib.request.urlopen('http://127.0.0.1:' + os.environ.get('MCP_PORT','8063') + '/healthz', timeout=4)" || exit 1
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
CLAUDE.md, line 6
env.example # deployment identity (MCP_DOMAIN, TUNNEL_ID) -> cp to .env;
deploy/aws/__main__.py, line 10
repo at a pinned ref, renders the root .env, and brings up
deploy/aws/__main__.py, line 22
.env files (dropped onto the VM over SSM), and the optional Slack app.
Show more
deploy/aws/userdata.sh, line 24
cat > .env <<'ENVEOF'
deploy/aws/userdata.sh, line 37
# Per-tool secrets (tools/<tool>/.env) arrive later over SSM; required:false in
deploy/cloudflare/__main__.py, line 16
tunnelId -> TUNNEL_ID in the root .env
scripts/new-tool.sh, line 19
# Default subdomain = <name>.<MCP_DOMAIN>, from the environment or the root .env
scripts/new-tool.sh, line 21
if [ -z "${MCP_DOMAIN:-}" ] && [ -f "$ROOT/.env" ]; then
security/approval/service/service.py, line 298
return bool(os.getenv("SLACK_BOT_TOKEN") and os.getenv("SLACK_APPROVAL_CHANNEL"))
security/approval/service/service.py, line 371
secret = os.getenv("SLACK_SIGNING_SECRET", "")
security/approval/service/service.py, line 433
os.getenv("DISCORD_BOT_TOKEN")
security/approval/service/service.py, line 435
and os.getenv("DISCORD_PUBLIC_KEY")
security/approval/service/service.py, line 479
key = os.getenv("DISCORD_PUBLIC_KEY", "")
security/approval/service/service.py, line 535
os.getenv("TELEGRAM_APPROVAL_BOT_TOKEN")
security/approval/service/service.py, line 537
and os.getenv("TELEGRAM_APPROVAL_WEBHOOK_SECRET")
security/approval/service/service.py, line 594
secret = os.getenv("TELEGRAM_APPROVAL_WEBHOOK_SECRET", "")
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
security/approval/widgets/ext-apps-bundle.js, line 1
var fI=Object.defineProperty;var dI=(r)=>r;function hI(r,i){this[r]=dI.bind(null,i)}var Lr=(r,i)=>{for(var v in i)fI(r,v,{get:i[v],enumerable:!0,configurable:!0,set:hI.bind(i,v)})}
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 d2fa4e7b0e9f. install fetches a script from the network. 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: d2fa4e7b0e9fc417cbb4854afb9b2aa4ccc51056
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