Purecontext MCP Server
purecontext-mcp
npm
v1.14.0
Published by goranocokoljic — no publish provenance and no vendor-owned scope, so the publisher could not be verified. The repository link below is self-declared.
Every server starts at 100. These are the exact deductions the deterministic engine applied — each one reproducible, none of it an opinion or an LLM's guess:
| Points | What was found | Category |
|---|---|---|
| −11 | Unsafe deserialization ×3 MTC-SRC-007 | permissions |
| −9.5 | Untrusted input concatenated into a command sink ×2 MTC-SRC-009 | injection |
| −6.3 | Package runs install-time scripts MTC-SUP-010 | supply-chain |
Capability observations and info notes are shown under Findings but never scored.
Open any row's finding below for the file, line and evidence behind the deduction.
Findings 15
high Reads a sensitive credential path or dumps the environment (dist/core/security.js)MTC-SRC-006
In the server's implementation (`dist/core/security.js:64`): Reading private keys / cloud credentials, or serializing the whole environment, is a sensitive-data source that becomes exfiltration when combined with any egress. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: id_rsa
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/core/security.js
high Shell/command execution in server code (dist/cli/hooks.js)MTC-SRC-002
In the server's implementation (`dist/cli/hooks.js:9`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: child_process
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/cli/hooks.js
high Shell/command execution in server code (dist/cli/install-writers.js)MTC-SRC-002
In the server's implementation (`dist/cli/install-writers.js:10`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: child_process
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/cli/install-writers.js
high Shell/command execution in server code (dist/config/cli.js)MTC-SRC-002
In the server's implementation (`dist/config/cli.js:305`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: child_process
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/config/cli.js
high Shell/command execution in server code (dist/core/db/wasm-sqlite.js)MTC-SRC-002
In the server's implementation (`dist/core/db/wasm-sqlite.js:174`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: exec(
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/core/db/wasm-sqlite.js
high Shell/command execution in server code (dist/core/git-log-reader.js)MTC-SRC-002
In the server's implementation (`dist/core/git-log-reader.js:11`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: child_process
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/core/git-log-reader.js
high Shell/command execution in server code (dist/server/tools/index-repo.js)MTC-SRC-002
In the server's implementation (`dist/server/tools/index-repo.js:16`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: child_process
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/server/tools/index-repo.js
medium Untrusted input concatenated into a command sink (dist/cli/install-writers.js)MTC-SRC-009
In the server's implementation (`dist/cli/install-writers.js:141`): A shell/process command assembled from concatenated or interpolated values is command injection when any part is attacker-influenced — the OWASP canonical RCE flow. Verify what reaches the interpolated value. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: spawnSync(`claude mcp remove ${MCP_SERVER_NAME} --scope ${
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/cli/install-writers.js
medium Untrusted input concatenated into a command sink (dist/core/db/wasm-sqlite.js)MTC-SRC-009
In the server's implementation (`dist/core/db/wasm-sqlite.js:210`): A shell/process command assembled from concatenated or interpolated values is command injection when any part is attacker-influenced — the OWASP canonical RCE flow. Verify what reaches the interpolated value. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: exec(`PRAGMA ${
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/core/db/wasm-sqlite.js
medium Dynamic module load from a non-literal (dist/handlers/less.js)MTC-SRC-005
In the server's implementation (`dist/handlers/less.js:13`): Loading a module chosen at runtime (from a variable) can pull in and run attacker-influenced code paths. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: import (reference)
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/handlers/less.js
medium Dynamic module load from a non-literal (dist/ui/assets/index-nX2chMqi.js)MTC-SRC-005
In the server's implementation (`dist/ui/assets/index-nX2chMqi.js:61`): Loading a module chosen at runtime (from a variable) can pull in and run attacker-influenced code paths. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: import(i.module)
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/ui/assets/index-nX2chMqi.js
medium Unsafe deserialization (dist/cli/install-writers.js)MTC-SRC-007
In the server's implementation (`dist/cli/install-writers.js:248`): Deserializing untrusted data with these APIs can execute arbitrary code (a well-known RCE gadget class). This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: yaml.load(
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/cli/install-writers.js
medium Unsafe deserialization (dist/handlers/openapi.js)MTC-SRC-007
In the server's implementation (`dist/handlers/openapi.js:156`): Deserializing untrusted data with these APIs can execute arbitrary code (a well-known RCE gadget class). This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: yaml.load(
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/handlers/openapi.js
medium Unsafe deserialization (dist/providers/dbt-provider.js)MTC-SRC-007
In the server's implementation (`dist/providers/dbt-provider.js:53`): Deserializing untrusted data with these APIs can execute arbitrary code (a well-known RCE gadget class). This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: yaml.load(
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/providers/dbt-provider.js
medium Package runs install-time scripts (postinstall)MTC-SUP-010
"purecontext-mcp" executes postinstall script(s) at install time. The large majority of malicious packages abuse install hooks to run code before you ever import them.
Fix: Review the scripts; install with --ignore-scripts where possible and vet what they do.
Location: package purecontext-mcp
What this scan could not see
- No tools were enumerated, so prompt-injection, capability and toxic-flow analysis had no tool surface to inspect. To grade a package’s real runtime tools, scan the running server: --command "npx -y <package>".
Versions
Scan history per published version. The engine is deterministic — the same version always yields the same score, so a changed score means the package itself changed.
| Version | Score | Findings | Engine | Scanned |
|---|---|---|---|---|
v1.14.0 latest |
C 73/100 | 15 | 1.5.0 | 2026-07-22 |
Embed this score
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Verify this score yourself
The score above is reproducible: the same package version always yields the same result. Run it locally or over the free API — no account, no LLM, fully deterministic.
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