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hunt-exceptional-conditions

Hunt mishandling of exceptional conditions — feed an endpoint malformed/unexpected input (wrong type, broken JSON, oversized field, null byte) and make it fail OPEN or leak internals: a verbose stack-trace / framework error page that discloses ORM internals, server file paths, library versions, or a language traceback. Use on any input-accepting endpoint (JSON APIs, forms, query params). Medium-High when the leak exposes internal structure that arms a deeper attack.

76

Quality

96%

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SecuritybySnyk

Critical

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SKILL.md
Quality
Evals
Security

Security

1 critical severity finding. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.

Critical

E004: Prompt injection detected in skill instructions.

What this means

Detected a prompt injection in the skill instructions. The skill contains hidden or deceptive instructions that fall outside its stated purpose and attempt to override the agent’s safety guidelines or intended behavior.

Why it was flagged

This document instructs how to deliberately send malformed inputs to cause verbose errors and extract internal server details (leads that can be used for attacks), so it is suspicious dual‑use security testing guidance rather than harmless documentation.

Report incorrect finding

Low

Low-risk findings.

1 low severity finding. Worth noting, but not necessarily harmful.

Low

W011: Third-party content exposure detected (indirect prompt injection risk).

What this means

The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.

Why it was flagged

SKILL.md describes probing an “input-accepting endpoint” at runtime by sending malformed/oversized fields and malformed JSON to elicit verbose developer error pages, so outsider-authored free text is effectively ingested via request bodies/params before the agent can select a specific item.

Repository
elementalsouls/Claude-BugHunter
Audited
Security analysis
Snyk

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