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performing-content-security-policy-bypass

An AI agent skill from mukul975/Anthropic-Cybersecurity-Skills, scored 64 out of 100 by code.

64/ 100C

Code score by group

  • Spec20/20
  • Description12/20
  • Procedure7/15
  • Done criteria0/15
  • Resources8/10
  • Scripts5/8
  • Safety7/7
  • Upkeep5/5

It loses the most points in Done criteria (15), the group that checks whether there is a checklist and a step that verifies the work.

What the author says it does

Analyze Content-Security-Policy headers and bypass them to achieve cross-site scripting by exploiting unsafe-inline/unsafe-eval, whitelisted JSONP endpoints, base-uri and form-action gaps, and nonce/hash weaknesses, then exfiltrate data even without script-src control. Use during web application security assessments or bug bounty hunting when XSS is found but blocked by CSP, or when auditing CSP header configuration for weaknesses.

This is the description in the skill's own SKILL.md, written by its author, not by SkillCheatSheet.

Repository
mukul975/Anthropic-Cybersecurity-Skills
Folder
skills/performing-content-security-policy-bypass
License
Apache-2.0
GitHub stars
35,958
SKILL.md lines
252
Other files
3

Add performing-content-security-policy-bypass to your agent

npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-content-security-policy-bypass

The command uses the open skills CLI. A skill is instructions and scripts your agent will follow, so read it first: open the folder on GitHub at the commit that was scored.

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All skills in mukul975/Anthropic-Cybersecurity-Skills

Scores come from a snapshot of 300 public GitHub repositories taken on 12 November 2026. Every score is the result of fixed checks run by code; no AI is involved. How scoring works.