MCP, MCP server
gum
gum, an MCP server listed in the PlugVet directory.
Compatibility: Not stated.
Grade D
Two or more Medium findings, or a High finding. Only try it in a sandbox.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
Rescanned at commit 465b711846ef, unchanged since the check below.
PERMISSION_SHELL_UNDECLARED SECRETS_PATH_CREDENTIAL
Why this grade
- PERMISSION_SHELL_UNDECLARED Medium
Runs shell commands that the manifest or description does not mention.
apps/gum/cmd/coverage-floor/main_test.go, line 18
cmd := exec.Command(bin, "-help") - SECRETS_PATH_CREDENTIAL Medium
Mentions a credential store path (~/.ssh, id_rsa, .npmrc, .aws/credentials, credentials.json, .netrc).
apps/gum/cmd/gum/auth.go, line 716
gcloudPath := filepath.Join(home, ".config", "gcloud", "application_default_credentials.json")
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
requests shell access. No manifest field names shell or command execution.
PERMISSION_SHELL_UNDECLARED
apps/gum/cmd/coverage-floor/main_test.go, line 18
cmd := exec.Command(bin, "-help")
apps/gum/cmd/coverage-floor/main_test.go, line 38
cmd := exec.Command(bin, "-workdir="+mod)
apps/gum/cmd/coverage-floor/main_test.go, line 77
cmd := exec.Command("go", "build", "-o", bin, ".")
Show more
apps/gum/cmd/gum/auth.go, line 664
cmd = exec.Command("open", authURL)
apps/gum/cmd/gum/auth.go, line 666
cmd = exec.Command("rundll32", "url.dll,FileProtocolHandler", authURL)
apps/gum/cmd/gum/auth.go, line 668
cmd = exec.Command("xdg-open", authURL)
apps/gum/cmd/gum/auth_browser_launch_failure_test.go, line 16
// Empty PATH so exec.Command("open"|"xdg-open"|"rundll32") fails to
apps/gum/cmd/gum/batch_caps_test.go, line 27
cmd := exec.CommandContext(ctx, bin, "mcp", "--stdio")
Install and update
Note
README documents an installer that pipes a download into a shell. The docs document an installer that pipes a download into a shell.
INSTALL_DOCUMENTED_INSTALLER
README.md, line 148
curl -fsSL https://raw.githubusercontent.com/ehmo/gum/main/install.sh | bash
install.sh, line 10
# curl -fsSL https://raw.githubusercontent.com/ehmo/gum/main/install.sh | bash
docs/install.md, line 24
curl -fsSL https://raw.githubusercontent.com/ehmo/gum/main/install.sh | bash
Network
Concern
can reach raw.githubusercontent.com. The description does not name that host. can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST
install.sh, line 13
# curl -fsSL https://raw.githubusercontent.com/ehmo/gum/main/install.sh | \
install.sh, line 17
# curl -fsSL https://raw.githubusercontent.com/ehmo/gum/main/install.sh | \
install.sh, line 80
curl -fsSL "${api}" | sed -nE 's/.*"tag_name"[[:space:]]*:[[:space:]]*"([^"]+)".*/\1/p' | head -n1
Show more
install.sh, line 215
curl -fsSL -o "${archive_name}" "${base}/${archive_name}"
install.sh, line 218
curl -fsSL -o "checksums.txt" "${base}/checksums.txt"
install.sh, line 227
if curl -fsSL -o "${provenance}" "${base}/${provenance}" 2>/dev/null; then
install_test.sh, line 90
*) echo "unexpected curl url: \${url:-}" >&2; exit 1 ;;
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_CREDENTIAL SECRETS_PATH_DOTENV
apps/gum/cmd/gum/auth.go, line 711
if v := os.Getenv("GOOGLE_APPLICATION_CREDENTIALS"); v != "" {
apps/gum/cmd/gum/auth.go, line 716
gcloudPath := filepath.Join(home, ".config", "gcloud", "application_default_credentials.json")
.gitignore, line 3
*-credentials*.json
Show more
.gitignore, line 4
.env
README.md, line 234
- Put project and deploy secrets into HASP, not in `.env` files or prompts.
apps/gum/internal/auth/adc.go, line 24
// 2. gcloud user credential cache (~/.config/gcloud/application_default_credentials.json)
apps/gum/internal/auth/adc.go, line 91
gcloudPath := filepath.Join(home, ".config", "gcloud", "application_default_credentials.json")
apps/gum/internal/sanitize/hardening.go, line 82
// names are matched on their own because "~/.ssh/id_rsa" is the whole
apps/gum/internal/sanitize/hardening.go, line 86
`|\.ssh/|\bid_rsa\b|\.env\b|credentials\.json`,
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Note
the file cap was reached before every file was read.
OBFUSCATION_FILE_CAP_REACHED
apps/gum/internal/adapters/grpc/routing_test.go, line 1
package grpc
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 465b711846ef. requests shell access. No manifest field names shell or command execution. README documents an installer that pipes a download into a shell. The docs document an installer that pipes a download into a shell. can reach raw.githubusercontent.com. The description does not name that host. can reach a host that is not written as a fixed address. reads a credential or environment file. the file cap was reached before every file was read.
Date and source
Date checked:
github.com
Commit graded: 465b711846ef6974c458c8e715dc090ed63bb5ce
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.