CVE-2025-62379 is an open redirect vulnerability in Reflex versions 0.5.4 through 0.8.14, a Python library for full-stack web apps. It allows attackers to redirect users to arbitrary external URLs by manipulating the redirect_to query parameter on the /auth-codespace endpoint, particularly within GitHub Codespaces environments or when specific environment variables are set in production. The vulnerability has a CVSS score of 3.1 (LOW), indicating a network attack vector with high attack complexity and low impact on integrity, requiring user interaction. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability. A patch is available in version 0.8.15, and a workaround involves ensuring the GITHUB_CODESPACES_PORT_FORWARDING_DOMAIN environment variable is not set in production.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Reflex-Dev | Reflex | >= 0.5.4, < 0.8.15CNA affected |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
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