Input validation error in ColdFusion - CVE-2026-27304
Published: April 15, 2026
Vulnerability identifier: #VU126088
CSH Severity: Critical
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-27304
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote non-authenticated attacker can send a specially crafted request to the application and execute arbitrary code on the system.
Affected software
ColdFusion
How to mitigate CVE-2026-27304
Install updates from vendor's website.
ColdFusion - addressed in versions 2023 Update 19, 2025 Update 7