Open Redirect Affecting reflex package, versions [0.5.4,0.8.15)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-REFLEX-13560525
- published16 Oct 2025
- disclosed15 Oct 2025
- creditKim SooHyun
Introduced: 15 Oct 2025
NewCVE-2025-62379 (opens in a new tab)How to fix?
Upgrade reflex to version 0.8.15 or higher.
Overview
reflex is a Web apps in pure Python.
Affected versions of this package are vulnerable to Open Redirect via the redirect_to query parameter in the /auth-codespace route, which is assigned directly to client-side links without validation and triggers automatic navigation. An attacker can cause users to be redirected to arbitrary external domains by crafting a link with a malicious redirect_to value. This is only exploitable if the GITHUB_CODESPACES_PORT_FORWARDING_DOMAIN environment variable is set in the deployment environment.