Arbitrary file upload in ColdFusion - CVE-2026-48283
Published: July 1, 2026
Vulnerability identifier: #VU136027
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-48283
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to unrestricted upload of file with dangerous type in ColdFusion when handling file uploads. A remote attacker can upload a dangerous file to execute arbitrary code.
Affected software
ColdFusion
How to mitigate CVE-2026-48283
Install security update from vendor's website.
ColdFusion - addressed in versions 2023 Update 21, 2025 Update 10