CVE-2026-48276 is a critical vulnerability in Adobe ColdFusion that allows an attacker to upload files of dangerous types without restriction. This can result in arbitrary code execution in the context of the current user. The vulnerability affects ColdFusion versions 2025.9, 2023.20, and earlier. Exploitation does not require user interaction and the scope of impact is changed, indicating potential privilege or security boundary escalation. The CVSS v3.1 base score is 10.0, reflecting high attack vector, low complexity, no privileges required, no user interaction, changed scope, and high impact on confidentiality, integrity, and availability. No official patch or remediation level has been published as of the data provided.

Successful exploitation allows an unauthenticated attacker to execute arbitrary code on affected ColdFusion servers, potentially leading to full system compromise under the current user context. The vulnerability impacts confidentiality, integrity, and availability severely. The changed scope indicates that the attacker may gain privileges or access beyond the initial attack vector.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider restricting file upload functionality, applying strict file type validation, and monitoring for suspicious upload activity. Avoid exposing ColdFusion upload endpoints to untrusted networks. Follow Adobe's official advisories for updates.