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good first issuehelp wanted
Description
the UI is not filtering input/output appropriately
Contributor guide
- Tech stack
- javascriptreact
- Domain
- frontendsecurity
- Issue type
- security
- DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
- 3
- Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
- half day
- Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
- stale
- ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
- needs investigation
- Prerequisites
- basic understanding of XSSfamiliarity with Reactknowledge of input sanitization
- Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
- 30
- Research direction
- Investigate the UI components that render user input (e.g., chat messages, usernames) and check for missing output sanitization. Look for direct innerHTML usage or unsafe React dangerouslySetInnerHTML. Identify which inputs are vulnerable using the screenshot as reference. After locating the vulnerable code, apply a sanitization library like DOMPurify or ensure proper HTML escaping. Test with common XSS payloads to confirm the fix works.