🛡️ Sentinel: Enhance input sanitization and update blocked domains #44

2026-02-01T01:55:28Z

ragusa-it commented

2026-02-01 01:55:28 +00:00

(Migrated from github.com)

Enhanced src/utils/security.ts by adding backtick escaping to sanitizeInput as a defense-in-depth measure against injection in JS contexts, and expanded the list of blocked disposable email domains to improve spam protection. Verified with updated unit tests.

PR created automatically by Jules for task 12355386453957124996 started by @ragusa-it

Enhanced `src/utils/security.ts` by adding backtick escaping to `sanitizeInput` as a defense-in-depth measure against injection in JS contexts, and expanded the list of blocked disposable email domains to improve spam protection. Verified with updated unit tests. --- *PR created automatically by Jules for task [12355386453957124996](https://jules.google.com/task/12355386453957124996) started by @ragusa-it*

👍 1

google-labs-jules[bot] commented

2026-02-01 01:55:29 +00:00

(Migrated from github.com)

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

For security, I will only act on instructions from the user who triggered this task.

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request. When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down. I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job! For more direct control, you can switch me to **Reactive Mode**. When this mode is on, I will only act on comments where you specifically mention me with `@jules`. You can find this option in the **Pull Request** section of your [global Jules UI settings](https://jules.google.com/settings). You can always switch back! New to Jules? Learn more at [jules.google/docs](https://jules.google/docs). --- *_For security, I will only act on instructions from the user who triggered this task._*

copilot-pull-request-reviewer[bot] (Migrated from github.com) reviewed 2026-02-01 01:57:44 +00:00

copilot-pull-request-reviewer[bot] (Migrated from github.com) left a comment

Pull request overview

This PR enhances input sanitization and email validation security by adding backtick escaping to the sanitizeInput function and expanding the list of blocked disposable email domains.

Changes:

Added backtick () escaping to sanitizeInput` function to prevent template literal injection attacks
Expanded blocked disposable email domains with 5 additional entries (guerrillamail.net, sharklasers.com, dispostable.com, maildrop.cc, getairmail.com)
Updated unit tests to cover backtick sanitization and some newly blocked domains

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/utils/security.ts	Added backtick escaping to sanitizeInput and expanded BLOCKED_DOMAINS with 5 new disposable email providers
src/utils/security.test.ts	Added test case for backtick sanitization and test cases for two newly blocked domains (sharklasers.com, maildrop.cc)
.jules/sentinel.md	Documented the backtick injection vulnerability, its implications, and prevention measures

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

## Pull request overview This PR enhances input sanitization and email validation security by adding backtick escaping to the `sanitizeInput` function and expanding the list of blocked disposable email domains. **Changes:** - Added backtick (`) escaping to `sanitizeInput` function to prevent template literal injection attacks - Expanded blocked disposable email domains with 5 additional entries (guerrillamail.net, sharklasers.com, dispostable.com, maildrop.cc, getairmail.com) - Updated unit tests to cover backtick sanitization and some newly blocked domains ### Reviewed changes Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment. | File | Description | | ---- | ----------- | | src/utils/security.ts | Added backtick escaping to sanitizeInput and expanded BLOCKED_DOMAINS with 5 new disposable email providers | | src/utils/security.test.ts | Added test case for backtick sanitization and test cases for two newly blocked domains (sharklasers.com, maildrop.cc) | | .jules/sentinel.md | Documented the backtick injection vulnerability, its implications, and prevention measures | --- 💡 <a href="/ragusa-it/ragusaitweb/new/main/.github/instructions?filename=*.instructions.md" class="Link--inTextBlock" target="_blank" rel="noopener noreferrer">Add Copilot custom instructions</a> for smarter, more guided reviews. <a href="https://docs.github.com/en/copilot/customizing-copilot/adding-repository-custom-instructions-for-github-copilot" class="Link--inTextBlock" target="_blank" rel="noopener noreferrer">Learn how to get started</a>.

src/utils/security.ts

copilot-pull-request-reviewer[bot] (Migrated from github.com) commented

2026-02-01 01:57:44 +00:00

Several newly added blocked domains (guerrillamail.net, dispostable.com, getairmail.com) are not covered by test cases. While sharklasers.com and maildrop.cc have test coverage added on lines 78-79, the other three domains should also have explicit test assertions to ensure the validation logic works correctly for all newly blocked domains.

This pull request can be merged automatically.

You are not authorized to merge this pull request.

View command line instructions

Checkout

From your project repository, check out a new branch and test the changes.

git fetch -u origin sentinel-security-enhancement-backticks-and-domains-12355386453957124996:sentinel-security-enhancement-backticks-and-domains-12355386453957124996

git checkout sentinel-security-enhancement-backticks-and-domains-12355386453957124996

Sign in to join this conversation.

1 Participants

Notifications

Due Date

No due date set.

Dependencies

No dependencies set.

Reference: ragusa-it/ragusaitweb#44