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Improve partner onboarding and documentation navigation (#174)
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Lead with a complete plugin quick start and add task-oriented usage, troubleshooting, customization, and contribution guides. Preserve the broader plugin framing, correct conflicting contract guidance, support Agents folder reviews, and align repository validation. Convert existing sample references to clickable links without changing knowledge rules.

Co-authored-by: Jesper Schulz-Wedde <jesper.schulzwedde@microsoft.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
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Jesper Schulz-Wedde 2026-09-09 17:31:03 +02:00 • committed by GitHub
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4
microsoft/knowledge/security/validate-user-configurable-urls.md
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@ -15,8 +15,8 @@ A URL stored in a table field is user-configurable: anyone with write access to
## Best Practice
Before any `HttpClient` call whose URL came from a table field, call `Uri.AreURIsHaveSameHost(StoredUrl, ExpectedBaseUrl)` against a hard-coded expected base, or `Uri.IsValidURIPattern(StoredUrl, 'https://*.myshopify.com/*')` against a fixed pattern. Fail the call with an `Error` when the validator returns false. For webhook scenarios where the host is registered out-of-band, compare against the registered host stored alongside the URL. See sample: `validate-user-configurable-urls.good.al`.
Before any `HttpClient` call whose URL came from a table field, call `Uri.AreURIsHaveSameHost(StoredUrl, ExpectedBaseUrl)` against a hard-coded expected base, or `Uri.IsValidURIPattern(StoredUrl, 'https://*.myshopify.com/*')` against a fixed pattern. Fail the call with an `Error` when the validator returns false. For webhook scenarios where the host is registered out-of-band, compare against the registered host stored alongside the URL. See sample: [`validate-user-configurable-urls.good.al`](validate-user-configurable-urls.good.al).
## Anti Pattern
`HttpClient.Get(Setup."Service URL", Response)` or `HttpClient.Post(WebhookSetup."Callback URL", Content, Response)` with no validation step in between. The extension will dutifully send the request — and any sensitive payload — to whatever host the attacker put in the field. Reviewers should flag any `HttpClient` call whose first argument is a record field, an `OnValidate`-mutable field, or a value sourced from a table read, unless a `Uri.AreURIsHaveSameHost` or `Uri.IsValidURIPattern` check precedes it. See sample: `validate-user-configurable-urls.bad.al`.
`HttpClient.Get(Setup."Service URL", Response)` or `HttpClient.Post(WebhookSetup."Callback URL", Content, Response)` with no validation step in between. The extension will dutifully send the request — and any sensitive payload — to whatever host the attacker put in the field. Reviewers should flag any `HttpClient` call whose first argument is a record field, an `OnValidate`-mutable field, or a value sourced from a table read, unless a `Uri.AreURIsHaveSameHost` or `Uri.IsValidURIPattern` check precedes it. See sample: [`validate-user-configurable-urls.bad.al`](validate-user-configurable-urls.bad.al).