Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

reflex-dev/reflex
main @ d6324cf
15
Fixes
9
CVEs
HIGH
Peak severity
41.7%
Coverage
Highlights
Denial of Service: 6 prior fixes. Scrutinize any change in this area.
reflex/app.py: most-fixed (3 issues). Treat as high-risk during review.
8 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns

The bug types that recur here, drawn from past fixes, not open vulnerabilities.

Denial of Service: Eagerly reading uploaded files into memory without streaming leads directly to memory exhaustion. Developers must use temporary files and explicitly invoke resource cleanup methods after operations complete to prevent file descriptor leaks.
Authorization Bypass: The reactive state update handler dynamically maps incoming event payloads to variables. Without verifying that target variables strictly belong to client storage and skipping auto-setters for internal framework states, remote clients can modify arbitrary server-side states.
Reflected XSS: Serving user-uploaded files or rendering upload identifiers dynamically without output escaping or strict Content-Disposition headers lets remote attackers execute arbitrary JavaScript in the user's browser context.