← mcpsafe@0.3.1
Propose a patch
A fix the maintainer can act on, with the evidence attached. It opens under your GitHub account in your browser; KillerSkills holds no token and never modifies the package. The fix is verified the only way we verify anything: the next crawl re-runs the new version in the honeypot. 68 · Caution
Evidence
The sandbox observed nothing beyond the static findings; the proposal cites those.
Diff · removes 25 caught lines
Download .patchdiff --git a/mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.json b/mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.json --- a/mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.json +++ b/mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.json @@ -5202,1 +5202,0 @@ -"response_payload": "testbom", @@ -5682,1 +5681,0 @@ -"response_payload": "testbom", diff --git a/mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.json b/mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.json --- a/mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.json +++ b/mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.json @@ -5909,1 +5909,0 @@ -"response_payload": "Database error: near \"testbom\": syntax error", diff --git a/mcpsafe-reports/mcpsafe-fetch-43707507-20260415-094623.html b/mcpsafe-reports/mcpsafe-fetch-43707507-20260415-094623.html --- a/mcpsafe-reports/mcpsafe-fetch-43707507-20260415-094623.html +++ b/mcpsafe-reports/mcpsafe-fetch-43707507-20260415-094623.html @@ -515,1 +515,0 @@ -<summary>Server accepted a second initialize() call on an already active session. The session remained usable, but the server sta…</summary> <div class="detail- @@ -643,1 +642,0 @@ -<summary>Tool 'fetch' is a data pass-through surface (file/diff/fetch/search). Output reflects external data verbatim; reverse-in…</summary> <div class= diff --git a/mcpsafe-reports/mcpsafe-docs-mcp-cloudflare-com-51b8b147-20260415-095321.html b/mcpsafe-reports/mcpsafe-docs-mcp-cloudflare-com-51b8b147-20260415-095321.html --- a/mcpsafe-reports/mcpsafe-docs-mcp-cloudflare-com-51b8b147-20260415-095321.html +++ b/mcpsafe-reports/mcpsafe-docs-mcp-cloudflare-com-51b8b147-20260415-095321.html @@ -494,1 +494,0 @@ -<summary>Server accepted a second initialize() call on an already active session. The session remained usable, but the server sta…</summary> <div class="detail- @@ -726,1 +725,0 @@ -<summary>Tool 'search_cloudflare_documentation' handled PI-001 (Classic override) gracefully.</summary> <div class="detail-box">Response excerpt: '& diff --git a/mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.html b/mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.html --- a/mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.html +++ b/mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.html @@ -474,1 +474,0 @@ -<summary>Prompt 'mcp-demo' echoed PI-001 payload into generated messages — stored injection risk.</summary> <div class="detail-box">Payload: 'Ignore @@ -492,1 +491,0 @@ -<summary>Prompt 'mcp-demo' echoed PI-002 payload into generated messages — stored injection risk.</summary> <div class="detail-box">Payload: '\n\nHu @@ -510,1 +508,0 @@ -<summary>Prompt 'mcp-demo' echoed PI-003 payload into generated messages — stored injection risk.</summary> <div class="detail-box">Payload: '<IM diff --git a/mcpsafe-reports/mcpsafe-observability-mcp-cloudflare-com-6449b524-20260415-095932.html b/mcpsafe-reports/mcpsafe-observability-mcp-cloudflare-com-6449b524-20260415-095932.html --- a/mcpsafe-reports/mcpsafe-observability-mcp-cloudflare-com-6449b524-20260415-095932.html +++ b/mcpsafe-reports/mcpsafe-observability-mcp-cloudflare-com-6449b524-20260415-095932.html @@ -470,1 +470,0 @@ -<summary>1 tool description(s) grew between two consecutive list_tools() calls (3 s apart). Descriptions only extended — likely C…</summary> <div class="detail- @@ -714,1 +713,0 @@ -<summary>Tool 'search_cloudflare_documentation' handled PI-001 (Classic override) gracefully.</summary> <div class="detail-box">Response excerpt: '& @@ -728,1 +726,0 @@ -<summary>Tool 'search_cloudflare_documentation' handled PI-002 (Newline injection) gracefully.</summary> <div class="detail-box">Response excerpt: ' diff --git a/mcpsafe-reports/mcpsafe-mcp-notes-d3159636-20260415-092920.html b/mcpsafe-reports/mcpsafe-mcp-notes-d3159636-20260415-092920.html --- a/mcpsafe-reports/mcpsafe-mcp-notes-d3159636-20260415-092920.html +++ b/mcpsafe-reports/mcpsafe-mcp-notes-d3159636-20260415-092920.html @@ -574,1 +574,0 @@ -<summary>Tool 'delete_note' echoed the raw injection payload back in its response (PI-001: Classic override).</summary> <div class="detail-box">Payload @@ -592,1 +591,0 @@ -<summary>Tool 'delete_note' echoed the raw injection payload back in its response (PI-002: Newline injection).</summary> <div class="detail-box">Payload diff --git a/mcpsafe-reports/mcpsafe-server-everything-4e602c49-20260415-093251.html b/mcpsafe-reports/mcpsafe-server-everything-4e602c49-20260415-093251.html --- a/mcpsafe-reports/mcpsafe-server-everything-4e602c49-20260415-093251.html +++ b/mcpsafe-reports/mcpsafe-server-everything-4e602c49-20260415-093251.html @@ -481,1 +481,0 @@ -<summary>Prompt 'args-prompt' echoed PI-001 payload into generated messages — stored injection risk.</summary> <div class="detail-box">Payload: 'Ign @@ -499,1 +498,0 @@ -<summary>Prompt 'args-prompt' echoed PI-002 payload into generated messages — stored injection risk.</summary> <div class="detail-box">Payload: '\n\ @@ -517,1 +515,0 @@ -<summary>Prompt 'args-prompt' echoed PI-003 payload into generated messages — stored injection risk.</summary> <div class="detail-box">Payload: '< diff --git a/mcpsafe-reports/mcpsafe-time-5744687d-20260415-094633.html b/mcpsafe-reports/mcpsafe-time-5744687d-20260415-094633.html --- a/mcpsafe-reports/mcpsafe-time-5744687d-20260415-094633.html +++ b/mcpsafe-reports/mcpsafe-time-5744687d-20260415-094633.html @@ -463,1 +463,0 @@ -<summary>Tool 'get_current_time' echoed the raw injection payload back in its response (PI-001: Classic override).</summary> <div class="detail-box">Pay @@ -481,1 +480,0 @@ -<summary>Tool 'get_current_time' echoed the raw injection payload back in its response (PI-002: Newline injection).</summary> <div class="detail-box">Pa @@ -499,1 +497,0 @@ -<summary>Tool 'get_current_time' echoed the raw injection payload back in its response (PI-003: XML tag injection).</summary> <div class="detail-box">Pa @@ -589,1 +586,0 @@ -<summary>Tool 'get_current_time' echoed the raw injection payload back in its response (PI-011: Rug pull attempt).</summary> <div class="detail-box">Pay diff --git a/mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.html b/mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.html --- a/mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.html +++ b/mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.html @@ -599,1 +599,0 @@ -<summary>Tool 'summarise_lines' echoed the raw injection payload back in its response (PI-001: Classic override).</summary> <div class="detail-box">Payl diff --git a/mcpsafe-reports/mcpsafe-mcp-calculator-e467fa76-20260415-092726.html b/mcpsafe-reports/mcpsafe-mcp-calculator-e467fa76-20260415-092726.html --- a/mcpsafe-reports/mcpsafe-mcp-calculator-e467fa76-20260415-092726.html +++ b/mcpsafe-reports/mcpsafe-mcp-calculator-e467fa76-20260415-092726.html @@ -574,1 +574,0 @@ -<summary>Tool 'mean' echoed the raw injection payload back in its response (PI-001: Classic override).</summary> <div class="detail-box">Payload (param= @@ -592,1 +591,0 @@ -<summary>Tool 'mean' echoed the raw injection payload back in its response (PI-002: Newline injection).</summary> <div class="detail-box">Payload (param
Zero-context hunks: apply with git apply --unidiff-zero fix.patch on the tagged source of 0.3.1. If the behavior is intended, declare it (host under permissions.network, a line in the README) instead of removing it; the next crawl scores declarations.
Issue / PR body
Title: mcpsafe: Hidden zero-width characters detected (KillerSkills verdict caution 68)
## What the honeypot observed KillerSkills ran **[email protected]** in an isolated sandbox (decoy credentials, recording proxy, syscall trace; engine 1.8.1) and scored it **CAUTION 68/100**. Summary: no network, touches nothing outside the project, writes no memory. - See the findings below. Full trace and findings: https://killerskills.ai/skills/pypi/mcpsafe/0.3.1 ## Findings with a location - `mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.json:5202` · Hidden zero-width characters detected — mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.json:5202 · Hidden zero-width characters detected — may conceal content - `mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.json:5909` · Hidden zero-width characters detected — mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.json:5909 · Hidden zero-width characters detected — may conceal content - `mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.json:5682` · Hidden zero-width characters detected — mcpsafe-reports/mcpsafe-mcp-text-processor-9d56aeae-20260415-093117.json:5682 · Hidden zero-width characters detected — may conceal content - `mcpsafe-reports/mcpsafe-fetch-43707507-20260415-094623.html:643` · Collapsed <details> block carrying instructions — mcpsafe-reports/mcpsafe-fetch-43707507-20260415-094623.html:643 · Collapsed <details> block carrying instructions · informational: not an instruction file - `mcpsafe-reports/mcpsafe-docs-mcp-cloudflare-com-51b8b147-20260415-095321.html:726` · Collapsed <details> block carrying instructions — mcpsafe-reports/mcpsafe-docs-mcp-cloudflare-com-51b8b147-20260415-095321.html:726 · Collapsed <details> block carrying instructions · informational: not an instruction file - `mcpsafe-reports/mcpsafe-fetch-43707507-20260415-094623.html:515` · Collapsed <details> block carrying instructions — mcpsafe-reports/mcpsafe-fetch-43707507-20260415-094623.html:515 · Collapsed <details> block carrying instructions · informational: not an instruction file - `mcpsafe-reports/mcpsafe-docs-mcp-cloudflare-com-51b8b147-20260415-095321.html:494` · Collapsed <details> block carrying instructions — mcpsafe-reports/mcpsafe-docs-mcp-cloudflare-com-51b8b147-20260415-095321.html:494 · Collapsed <details> block carrying instructions · informational: not an instruction file - `mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.html:492` · Collapsed <details> block carrying instructions — mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.html:492 · Collapsed <details> block carrying instructions · informational: not an instruction file - `mcpsafe-reports/mcpsafe-observability-mcp-cloudflare-com-6449b524-20260415-095932.html:714` · Collapsed <details> block carrying instructions — mcpsafe-reports/mcpsafe-observability-mcp-cloudflare-com-6449b524-20260415-095932.html:714 · Collapsed <details> block carrying instructions · informational: not an instruction file - `mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.html:510` · Collapsed <details> block carrying instructions — mcpsafe-reports/mcpsafe-sqlite-65e5b38a-20260415-094750.html:510 · Collapsed <details> block carrying instructions · informational: not an instruction file - `mcpsafe-reports/mcpsafe-mcp-notes-d3159636-20260415-092920.html:574` · Collapsed <details> block carrying instructions — mcpsafe-reports/mcpsafe-mcp-notes-d3159636-20260415-092920.html:574 · Collapsed <details> block carrying instructions · informational: not an instruction file - `mcpsafe-reports/mcpsafe-server-everything-4e602c49-20260415-093251.html:481` · Collapsed <details> block carrying instructions — mcpsafe-reports/mcpsafe-server-everything-4e602c49-20260415-093251.html:481 · Collapsed <details> block carrying instructions · informational: not an instruction file ## Proposed change The attached patch removes the 25 lines above. If the behavior is intended, the fix is to declare it instead: list the host under `permissions.network` (or the MCP manifest) and say in the README why the package needs it; the next crawl will re-score it with the declaration taken into account. ## How this will be verified Nothing is "verified safe" by assertion. When a new version is published, KillerSkills re-runs it in the honeypot and the verdict page updates; you can trigger it early from the verdict page ("Re-scan after I publish a fix"). Reply here or at [email protected] if you believe the verdict is wrong; disputes are reviewed by a person and the outcome is published on the verdict page. _Proposed through killerskills.ai/threats by a user of the package, under their own GitHub account. The evidence is public; the package was never modified by KillerSkills._
# or from a terminal, under your own account: gh repo fork Ravikiranbantwal/mcpsafe --clone && cd mcpsafe curl -s https://killerskills.ai/skills/pypi/mcpsafe/0.3.1/patch.diff | git apply --unidiff-zero git checkout -b killerskills/0.3.1 && git commit -am "mcpsafe: Hidden zero-width characters detected" gh pr create --fill --body-file <(curl -s https://killerskills.ai/skills/pypi/mcpsafe/0.3.1/patch.md)
We count proposals opened, not merged: a merge shows up as a new version that the crawl re-runs. Disputes: the maintainer can contest the verdict from its page; a person reviews it and the outcome is published.