Grades are a hygiene check, not a security guarantee.

MCP, MCP server

MCP Server for OSCAL

MCP Server for OSCAL, 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.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    bin/build_oscal_db.py, line 106 os.remove(db_path)

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    bin/refresh-nist-docs.sh, line 43 curl -L -o "$DOWNLOAD_DIR"/"$RELEASE_FILE_NAME" $RELEASE_URL || { echo "FAIL 4"; exit 4; }

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .kiro/specs/oscal-mcp-server/design.md, line 640 - **Dotenv Loading**: `load_dotenv()` is called in `Config.__init__()` to load `.env` files.

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    src/mcp_server_for_oscal/config.py, line 71 self.agent_max_tokens: int = int(os.getenv("OSCAL_AGENT_MAX_TOKENS", "4096"))

  • OBFUSCATION_FILE_OVER_READ_CAP Note

    A file was over the read cap and was not fully read.

    src/mcp_server_for_oscal/oscal_schemas/oscal_assessment-plan_schema.xsd, line 1 <xs:schema xmlns="http://csrc.nist.gov/ns/oscal/1.0"

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

    bin/build_oscal_db.py, line 106

    os.remove(db_path)

    bin/update_hashes.py, line 84

    commit = subprocess.run(

    src/mcp_server_for_oscal/tools/validate_oscal_content.py, line 211

    result = subprocess.run(

    Show more

    src/mcp_server_for_oscal/tools/README.md, line 193

    | 4. oscal-cli | Full NIST validation | `subprocess.run()` if on PATH |

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    bin/refresh-nist-docs.sh, line 43

    curl -L -o "$DOWNLOAD_DIR"/"$RELEASE_FILE_NAME" $RELEASE_URL || { echo "FAIL 4"; exit 4; }

    bin/update-aws-cdefs.sh, line 46

    curl -L -o "$DOWNLOAD_DIR"/"$RELEASE_FILE_NAME" $RELEASE_URL || { echo "FAIL 4"; exit 4; }

    bin/update-oscal-schemas.sh, line 47

    curl -L -o "$DOWNLOAD_DIR"/"$OSCAL_RELEASE_FILE_NAME" $OSCAL_RELEASE_URL

    Show more

    src/mcp_server_for_oscal/tools/query_component_definition.py, line 121

    response = requests.get(source, timeout=config.request_timeout)

    src/mcp_server_for_oscal/tools/validate_oscal_content.py, line 302

    response = requests.get(file_uri, timeout=config.request_timeout)

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    src/mcp_server_for_oscal/config.py, line 71

    self.agent_max_tokens: int = int(os.getenv("OSCAL_AGENT_MAX_TOKENS", "4096"))

    .kiro/specs/oscal-mcp-server/design.md, line 640

    - **Dotenv Loading**: `load_dotenv()` is called in `Config.__init__()` to load `.env` files.

    DEVELOPING.md, line 27

    Create a `.env` file from the template and set the relevant values:

    Show more

    DEVELOPING.md, line 29

    cp dotenv.example .env

    dotenv.example, line 3

    # copy this file to .env and set appropriate values. See README.md

  • 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

    src/mcp_server_for_oscal/oscal_schemas/oscal_assessment-plan_schema.xsd, line 1

    <xs:schema xmlns="http://csrc.nist.gov/ns/oscal/1.0"

    src/mcp_server_for_oscal/oscal_schemas/oscal_assessment-results_schema.xsd, line 1

    <xs:schema xmlns="http://csrc.nist.gov/ns/oscal/1.0"

    src/mcp_server_for_oscal/oscal_schemas/oscal_complete_schema.json, line 1

    {"$schema":"http://json-schema.org/draft-07/schema#","$id":"http://csrc.nist.gov/ns/oscal/1.0/1.2.1/oscal-complete-schema.json","$comment":"OSCAL Unified Model of Models: JSON Sche

    Show more

    src/mcp_server_for_oscal/oscal_schemas/oscal_complete_schema.xsd, line 1

    <xs:schema xmlns="http://csrc.nist.gov/ns/oscal/1.0"

    src/mcp_server_for_oscal/oscal_schemas/oscal_poam_schema.xsd, line 1

    <xs:schema xmlns="http://csrc.nist.gov/ns/oscal/1.0"

    src/mcp_server_for_oscal/oscal_schemas/oscal_ssp_schema.xsd, line 1

    <xs:schema xmlns="http://csrc.nist.gov/ns/oscal/1.0"

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit de7f35614f50. can delete files. 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:

View source

github.com

Commit graded: de7f35614f50c9ade5d08b3e1c617112ea573ad1

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Read how this letter is chosen