angular-security

A security guide for Angular applications with a .NET backend. It covers unsafe HTML, browser security policies, cross-site request forgery, and permission-based interface checks.

In plain words
What is it for?
Use it to review Angular templates, HTML sanitisation, security policy setup, CSRF handling, and permission-based route or interface controls.
Why use it?
It helps catch common ways user-controlled data can run unwanted code or security checks can be applied incorrectly.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/agenticpawan/fullstack-pilot/angular-security
Any agent
npx skills add AgenticPawan/FullStack-Pilot --skill angular-security
Clone the repo
git clone --depth 1 https://github.com/AgenticPawan/FullStack-Pilot

Made for: Claude Code, Codex.

Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,652 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00083 $0.02652
Opus 5 $0.00042 $0.01326
Sonnet 5 $0.00017 $0.00530
Haiku 4.5 $0.00008 $0.00265

Measured yesterday against content hash dc63c29b57ca, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

angular-security scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/pilot-angular/skills/angular-security/SKILL.md · 315 lines

How it starts

The opening of the file, as written. The whole thing — 315 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Rule reference

ID Standard Severity
angular-no-innerhtml OWASP A03 block
angular-no-bypass-without-comment OWASP A03 block
angular-csp-nonce InternalPolicy warn
angular-trusted-types InternalPolicy warn
angular-csrf-dotnet InternalPolicy warn
angular-permission-based-authz OWASP A01 block

XSS — template binding hygiene

Angular escapes {{ interpolation }} and [textContent] bindings automatically. The danger surface is:

  • [innerHTML] — Angular sanitizes but bypassSecurityTrustHtml disables sanitization entirely
  • Dynamic <script> injection via Renderer2.createElement
  • [style] / [src] / [href] with user-controlled values

BAD — innerHTML with untrusted content

<!-- OWASP A03: Angular sanitizes here, but the pattern invites bypass misuse -->
<div [innerHTML]="user.bio"></div>
<div [innerHTML]="product.description"></div>
// CRITICAL: disables ALL sanitization for this value
this.content = this.sanitizer.bypassSecurityTrustHtml(apiResponse.html);

GOOD — text binding (always safe); HTML only with justification

<!-- Option 1: text binding — zero XSS risk -->
<p>{{ user.bio }}</p>

<!-- Option 2: HTML required — sanitized value with justification comment -->
<div [innerHTML]="sanitizedBio"></div>
// Acceptable ONLY when source is server-validated rich text (e.g. CMS output).
// Source: CMS markdown-to-HTML pipeline — no user-supplied HTML is accepted.
this.sanitizedBio = this.sanitizer.bypassSecurityTrustHtml(cms.html);

Rule: every call to any bypassSecurityTrust* method MUST have a comment on the preceding line explaining the trusted source. PR reviewers MUST reject uncommented bypasses.

Read the full file on GitHub · 315 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 315 lines · 83 tokens per session scan A dc63c29b57ca

Subscribe to this mod's changes

angular-security is a skill published in the GitHub repository AgenticPawan/FullStack-Pilot (2 stars, last pushed 1mo ago), licensed MIT. It adds 83 tokens to every session and 2,652 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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