# cure53/H5SC

HTML5 Security Cheatsheet - A collection of HTML5 related XSS attack vectors

Repository: https://github.com/cure53/H5SC
Canonical: https://ross.abutalabs.com/products/h5sc
Homepage: https://html5sec.org/
Language: JavaScript
License: MPL-2.0
License Family: copyleft
Last push: 2022-02-23T16:46:20+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4541, "days_push": 1652, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2938, forks 415 (observed 2026-08-28T04:07:30.952711+00:00)

## What it is
A curated collection of HTML5-related XSS attack vectors, test files, and hidden testing features, browsable at html5sec.org. It serves as a reference dataset for security researchers and penetration testers testing browser and web application XSS defenses.

## Use cases
- find XSS payloads for testing a web app
- test browser XSS filters against HTML5 vectors
- get sample files for XSS testing
- look up vectors related to innerHTML
- learn about HTML5 security pitfalls

## When to choose
- you need a comprehensive reference of XSS attack vectors
- you are doing browser or web app security testing
- you need test files in many formats for XSS research

## When to avoid
- you need an automated vulnerability scanner
- you want a defensive library or sanitizer
- you need general security training beyond XSS

## Facets
- artifact type: dataset
- maturity: maintenance
- function: security, testing, documentation
- domain: security, web-development, penetration-testing
- platform: browser
- tags: xss, cheatsheet, html5, attack-vectors, penetration-testing, web-security, web-server

## Member repositories
- cure53/H5SC (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:30.952711+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:33:05.687303+00:00, confidence not recorded.
  - readme: https://github.com/cure53/H5SC (fetched 2026-08-28T04:07:30.952711+00:00, sha c5a3b049d6de)
  - homepage: https://html5sec.org/ (fetched 2026-08-29T09:48:34.495179+00:00, sha b27794aa0bae)
- Data as of 2026-08-30T08:39:29.467469+00:00.