MCP, MCP server
mu
mu, 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).
scripts/install.sh, line 4
# Usage: curl -sSL https://raw.githubusercontent.com/0ximu/mu/main/scripts/install.sh | sh
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
mu-cli/src/commands/completions.rs, line 90
"Invoke-Expression (& mu completions powershell | Out-String)".to_string(),
Install and update
Serious
install fetches a script from the network. The docs document an installer that pipes a download into a shell.
INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER
scripts/install.sh, line 4
# Usage: curl -sSL https://raw.githubusercontent.com/0ximu/mu/main/scripts/install.sh | sh
.github/workflows/release.yml, line 192
curl -sSL https://raw.githubusercontent.com/${{ github.repository }}/main/scripts/install.sh | sh
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
mu-core/src/parser/python.rs, line 958
def fetch(self, request: HTTPRequest) -> HTTPResponse:
mu-core/src/parser/typescript.rs, line 969
fetch(request: HTTPRequest): HTTPResponse;
scripts/install.sh, line 76
if command -v curl &> /dev/null; then
Show more
scripts/install.sh, line 77
curl -sSL "$url" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/'
scripts/install.sh, line 78
elif command -v wget &> /dev/null; then
scripts/install.sh, line 79
wget -qO- "$url" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/'
scripts/install.sh, line 81
error "Neither curl nor wget found. Please install one of them."
scripts/install.sh, line 92
if command -v curl &> /dev/null; then
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_DOTENV
mu-cli/src/commands/diff.rs, line 410
.env("GIT_CONFIG_GLOBAL", "/dev/null")
mu-cli/src/commands/diff.rs, line 411
.env("GIT_CONFIG_SYSTEM", "/dev/null")
mu-cli/src/commands/diff.rs, line 412
.env("GIT_AUTHOR_NAME", "test")
Show more
mu-cli/src/commands/diff.rs, line 413
.env("GIT_AUTHOR_EMAIL", "test@test")
mu-cli/src/commands/diff.rs, line 414
.env("GIT_COMMITTER_NAME", "test")
mu-cli/src/commands/diff.rs, line 415
.env("GIT_COMMITTER_EMAIL", "test@test")
.gitignore, line 65
# Environment
.gitignore, line 66
.env
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 029eaf301fa7. requests shell access. The manifest names this permission. install fetches a script from the network. The docs document an installer that pipes a download into a shell. 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: 029eaf301fa71cb61252030d7455b67a9aa45f4c
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