MCP, MCP server
io.github.ObscuritySRL/umbriel
io.github.ObscuritySRL/umbriel, 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.
Rescanned at commit 752d5f28be46, unchanged since the check below.
INSTALL_UNPINNED NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST SECRETS_PATH_DOTENV OBFUSCATION_FILE_OVER_READ_CAP
Why this grade
- INSTALL_UNPINNED Low
Dependencies use a range or git URL with no lockfile.
package.json, line 7
@bun-win32/advapi32 - NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
example/agent-loop.ts, line 69
const response = await fetch('https://api.anthropic.com/v1/messages', { - NETWORK_UNNAMED_HOST Low
Calls a fixed host that the description does not name.
example/agent-loop.ts, line 69
const response = await fetch('https://api.anthropic.com/v1/messages', { - SECRETS_PATH_DOTENV Low
Mentions a .env file.
.gitignore, line 22
# dotenv - OBFUSCATION_FILE_OVER_READ_CAP Note
A file was over the read cap and was not fully read.
mcp.ts, line 1
#!/usr/bin/env bun
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
Concern
dependencies are not pinned.
INSTALL_UNPINNED
package.json, line 7
@bun-win32/advapi32
Network
Concern
can reach api.anthropic.com. The description does not name that host. can reach registry.npmjs.org. 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
example/agent-loop.ts, line 69
const response = await fetch('https://api.anthropic.com/v1/messages', {
scripts/release-check.ts, line 51
const response = await fetch(`https://registry.npmjs.org/${name.replace('/', '%2f')}`);
findings/2026-06-27-harden-panel-five-ship-converged.md, line 124
get_env / read_event_log / registry / file raw reads stay UNMASKED (owner-confirmed 2026-06-23). HTTP fetch
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_DOTENV
example/_harness.ts, line 34
const proc = Bun.spawn(['bun', 'run', `${import.meta.dir}/../mcp.ts`], { stdin: 'pipe', stdout: 'pipe', stderr: 'ignore', env: { ...Bun.env, ...env } });
example/mcp-security-floor.integration.test.ts, line 30
const proc = Bun.spawn(['bun', 'run', `${import.meta.dir}/../mcp.ts`], { stdin: 'pipe', stdout: 'pipe', stderr: 'pipe', env: { ...Bun.env, ...env } });
.gitignore, line 22
# dotenv
Show more
example/policy-case-insensitive.integration.test.ts, line 20
const proc = Bun.spawn(['bun', 'run', `${import.meta.dir}/../mcp.ts`], { stdin: 'pipe', stdout: 'pipe', stderr: 'ignore', env: { ...Bun.env, ...env } });
example/security-policy.integration.test.ts, line 36
const proc = Bun.spawn(['bun', 'run', `${import.meta.dir}/../mcp.ts`], { stdin: 'pipe', stdout: 'pipe', stderr: 'pipe', env: { ...Bun.env, ...env } });
.gitignore, line 23
.env
.gitignore, line 24
.env.*.local
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
mcp.ts, line 1
#!/usr/bin/env bun
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 752d5f28be46. dependencies are not pinned. can reach api.anthropic.com. The description does not name that host. can reach registry.npmjs.org. 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. a file was over the read cap and was not fully read.
Date and source
Date checked:
github.com
Commit graded: 752d5f28be46ea510f47400e805927b9e9fd44b5
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.