CVE-2025-47425: 
Python vulnerability analysis and mitigation

CVE-2025-47425 is a high-severity vulnerability affecting the Reflex Python package, discovered and disclosed on May 14, 2025. The vulnerability impacts multiple versions of Reflex from version 0.2.7 up to version 0.7.11, affecting the state management functionality of Reflex applications (GitHub Advisory, Wiz).

The vulnerability is classified as an Integer Underflow (Wrap or Wraparound) issue with a CVSS v3.1 Base Score of 8.1 (HIGH). It features a network-based attack vector with low attack complexity, requiring low privileges and no user interaction. The vulnerability stems from an event meant to modify client-side storage having unrestricted access to modify any field on the state for a given user, including non-client side and private fields (GitHub Advisory, Wiz).

If successfully exploited, this vulnerability allows an attacker to modify any private field on their own state, potentially enabling them to escalate privileges or impersonate other users. Specifically, if a State in the application can be modified to alter user roles, an attacker could potentially gain administrative access or act as a different user (GitHub Advisory, Wiz).

Multiple patched versions have been released to address this vulnerability, including versions 0.4.9.post1, 0.5.10.post1, 0.6.8.post1, 0.7.1.post1 through 0.7.10.post1, and version 0.7.11. Users are strongly advised to upgrade to the latest patched version appropriate for their installation. The fix restricts the updatevarsinternal function to only modify vars associated with client storage values (GitHub Advisory, Wiz).