GitMCP

All 6 findings

1. high
   Tool `fetch_generic_url_content` accepts an unconstrained URL / endpoint parameter· fetch_generic_url_contentssrf surface

   The parameter(s) `url` look like URL or endpoint inputs but carry no `pattern` or `enum` constraint. An agent tricked by an indirect-injection payload can invoke this tool with an internal-service URL (e.g. `http://169.254.169.254/`) to exfiltrate cloud metadata, probe internal APIs, or pivot to services the host can reach but the caller cannot.

   fix: Constrain the URL parameter with an allow-list `enum`, or a `pattern` that restricts scheme and domain. Validate server-side against an allow-list and reject private / loopback / link-local address ranges at the HTTP client level.

2. medium
   Tool `match_common_libs_owner_repo_mapping` accepts unconstrained string input· match_common_libs_owner_repo_mappingunconstrained input

   The following string parameter(s) have no `maxLength` constraint: `library`. Unbounded strings let an attacker stuff arbitrary payloads through the tool, including indirect-injection content.

   fix: Add a `maxLength` to each string property, or constrain with an `enum` or `pattern`. Most legitimate tool inputs fit under a few hundred bytes.

3. medium
   Tool `fetch_generic_documentation` accepts unconstrained string input· fetch_generic_documentationunconstrained input

   The following string parameter(s) have no `maxLength` constraint: `owner`, `repo`. Unbounded strings let an attacker stuff arbitrary payloads through the tool, including indirect-injection content.

   fix: Add a `maxLength` to each string property, or constrain with an `enum` or `pattern`. Most legitimate tool inputs fit under a few hundred bytes.

4. medium
   Tool `search_generic_documentation` accepts unconstrained string input· search_generic_documentationunconstrained input

   The following string parameter(s) have no `maxLength` constraint: `owner`, `query`, `repo`. Unbounded strings let an attacker stuff arbitrary payloads through the tool, including indirect-injection content.

   fix: Add a `maxLength` to each string property, or constrain with an `enum` or `pattern`. Most legitimate tool inputs fit under a few hundred bytes.

5. medium
   Tool `search_generic_code` accepts unconstrained string input· search_generic_codeunconstrained input

   The following string parameter(s) have no `maxLength` constraint: `owner`, `query`, `repo`. Unbounded strings let an attacker stuff arbitrary payloads through the tool, including indirect-injection content.

   fix: Add a `maxLength` to each string property, or constrain with an `enum` or `pattern`. Most legitimate tool inputs fit under a few hundred bytes.

6. medium
   Tool `fetch_generic_url_content` accepts unconstrained string input· fetch_generic_url_contentunconstrained input

   The following string parameter(s) have no `maxLength` constraint: `url`. Unbounded strings let an attacker stuff arbitrary payloads through the tool, including indirect-injection content.

   fix: Add a `maxLength` to each string property, or constrain with an `enum` or `pattern`. Most legitimate tool inputs fit under a few hundred bytes.