hunt-websocket

Hunt WebSocket vulnerabilities — Cross-Site WebSocket Hijacking (CSWSH), missing/weak Origin validation on the WS handshake, no per-message authentication, message tampering, socket.io namespace/room authorization bypass, and handshake-layer Upgrade smuggling. Use when target has WebSocket endpoints (ws:// or wss://), socket.io / SignalR / Phoenix Channels, real-time features, chat, live dashboards, notifications, or trading platforms.

Quality

92%

Does it follow best practices?

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Securityby

Critical

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Quality

Content

85%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A highly actionable, well-sequenced hunting playbook with strong validation discipline and copy-paste tooling. Its main weakness is progressive disclosure: all detail lives inline in SKILL.md with no reference files to offload the reference-cases table and packet-level specifics.

Suggestions

Move the Grounding reference-cases table and CVE details into a references/ file (e.g. REFERENCES.md) and link to it from a short 'Grounding' stub, reducing SKILL.md length and giving the CVEs a stable, updatable home.

Extract the packet-level socket.io/Engine.IO specifics (Phase 5 and Phase 7) into a references/socketio.md file, keeping SKILL.md as the overview that points one level deep.

Trim redundancy between the Crown Jewel Targets, Chain Table, and final Severity sections — consolidate impact/severity into the Chain Table and drop the duplicated prose.

Dimension	Reasoning	Score
Conciseness	The body is dense and assumes Claude's competence (no basic 'what is a WebSocket' padding), but the Crown Jewel Targets, Chain Table, and final Validation/Severity sections restate overlapping chain/impact information that could be trimmed, sitting just below the 'every token earns its place' anchor.	4 / 5
Actionability	Copy-paste-ready bash (wscat, curl, nmap, grep), a complete attacker-origin HTML PoC, and exact socket.io packet bytes (40/admin,) make the guidance fully executable across the common cases.	5 / 5
Workflow Clarity	Seven sequenced phases each carry inline 'Validate:' checkpoints, a dedicated mandatory Validation checklist, and False-Positive Killers feedback loops, satisfying the explicit-validation + error-recovery anchor with no missing validation cap.	5 / 5
Progressive Disclosure	Internally well-sectioned, but the ~280-line body is monolithic with no bundle files or one-level-deep references; the Grounding reference-cases table and packet-level socket.io specifics are inlined rather than split into reference files, matching the 'some structure but content that should be separate is inline' anchor.	3 / 5
	Total	17 / 20 Passed

Description

100%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is excellent: third-person imperative voice, dense with concrete vulnerability classes, and paired with an explicit, trigger-rich 'Use when' clause. It distinguishes itself clearly from sibling hunting skills.

Dimension	Reasoning	Score
Specificity	Names six concrete vulnerability classes (CSWSH, missing/weak Origin validation, no per-message authentication, message tampering, socket.io namespace/room authorization bypass, handshake-layer Upgrade smuggling), matching the 'multiple specific concrete actions; comprehensive coverage' anchor.	5 / 5
Completeness	Explicitly answers 'what' (hunt these WS vulnerabilities) and 'when' via a concrete 'Use when target has WebSocket endpoints...' clause, matching the anchor for clearly answering both what AND when.	5 / 5
Trigger Term Quality	Covers natural terms users would say including protocol schemes (ws://, wss://), frameworks (socket.io, SignalR, Phoenix Channels), and feature triggers (chat, live dashboards, notifications, trading platforms), matching comprehensive synonym/extension coverage.	5 / 5
Distinctiveness Conflict Risk	A clearly scoped WebSocket-only hunting niche with protocol/framework-specific triggers that minimize overlap with other hunt skills, matching the 'clear niche with distinct triggers; minimal conflict risk' anchor.	5 / 5
	Total	20 / 20 Passed

Validation

93%

Warnings & errors only

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 15 / 16 Passed

Validation for skill structure

Criteria	Description	Result
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning

	Total	15 / 16 Passed

Repository: elementalsouls/Claude-BugHunter
Path: skills/hunt-websocket/SKILL.md
Commit: 0ce18ba

Reviewed: 1 day ago

Table of Contents

Discovery Implementation Validation

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