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hunt-springboot

Hunt Spring Boot specific vulnerabilities — Actuator endpoints (heapdump, env, loggers, mappings, shutdown), Spring Expression Language (SpEL) injection → RCE, H2 console RCE, Jolokia JMX exposure, Spring4Shell (CVE-2022-22965), Spring Cloud Function SPEL (CVE-2022-22963), heap dump credential extraction. Use when target runs Spring Boot — detected via X-Application-Context header, /actuator, Whitelabel Error Page, or Java stack traces.

79

Quality

100%

Does it follow best practices?

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SecuritybySnyk

Critical

Do not install without reviewing

SKILL.md
Quality
Evals
Security

Quality

Content

100%

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

The content is an executable, well-sequenced hunting playbook that respects Claude's competence — concrete commands, real payloads, and a validation section without explanatory padding. It is self-contained and clearly organized into phases.

DimensionReasoningScore

Conciseness

The body is a lean tactical playbook of curl/strings commands with only operational comments (e.g., the note that exec() returns a Process so output needs an OOB callback) — it does not explain concepts Claude already knows, so it sits at 'lean and efficient' rather than 'mostly efficient but could be tightened'.

3 / 3

Actionability

Phases are filled with copy-paste-ready executable bash, concrete SpEL payloads, AWS/Stripe/Bearer regexes, and a full URL-encoded Spring4Shell payload — matching 'fully executable code/commands; copy-paste ready' rather than pseudocode.

3 / 3

Workflow Clarity

Seven numbered phases give a clear sequence (fingerprint → enumerate → heapdump → H2 → SpEL → Spring4Shell → Jolokia) with an explicit Validation section and inline false-positive checks (e.g., requiring actuator-shaped JSON, 7*7=49 confirmation), satisfying 'explicit validation steps' for the destructive/RCE operations rather than leaving checkpoints implicit.

3 / 3

Progressive Disclosure

No bundle files exist and the skill is a single self-contained file organized into clear phase sections with no nested 'see X.md' chains; per the simple-skill scoring note, well-organized single-file content with no need for external references scores 3 rather than the monolithic/deeply-nested anchor.

3 / 3

Total

12

/

12

Passed

Description

100%

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 specific, third-person, and clearly pairs concrete capabilities with an explicit 'Use when...' trigger plus detection signals. It avoids vague fluff and is unlikely to conflict with other skills.

DimensionReasoningScore

Specificity

Lists multiple concrete actions — 'Actuator endpoints (heapdump, env, loggers, mappings, shutdown)', 'SpEL injection → RCE', 'H2 console RCE', 'Jolokia JMX exposure', 'Spring4Shell (CVE-2022-22965)', 'heap dump credential extraction' — matching the 'lists multiple specific concrete actions' anchor rather than naming only a domain.

3 / 3

Completeness

Explicitly answers both what (the vulnerability classes) and when via 'Use when target runs Spring Boot — detected via X-Application-Context header, /actuator, Whitelabel Error Page, or Java stack traces', satisfying the 'Use when...' requirement rather than leaving when implied.

3 / 3

Trigger Term Quality

Natural terms a practitioner would actually say — 'Spring Boot', 'Actuator', 'SpEL', 'RCE', 'Spring4Shell', 'H2 console', 'Jolokia' — with good coverage; not merely technical jargon like 'document object model manipulation'.

3 / 3

Distinctiveness Conflict Risk

Clear Spring-Boot-specific niche with distinct detection triggers (X-Application-Context header, Whitelabel Error Page) unlikely to fire for non-Spring skills, matching the 'clear niche with distinct triggers' anchor.

3 / 3

Total

12

/

12

Passed

Validation

93%

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

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository
elementalsouls/Claude-BugHunter
Reviewed

Table of Contents

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