Cross-site scripting in ColdFusion - CVE-2026-21269
Published: September 8, 2026
Vulnerability identifier: #VU147435
CSH Severity: Medium
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-21269
CWE-ID: CWE-79
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to stored cross-site scripting in Adobe ColdFusion when rendering crafted content. A local user can store crafted content to execute arbitrary code.
User interaction is required.
Affected software
ColdFusion
How to mitigate CVE-2026-21269
Install security update from vendor's website.
ColdFusion - addressed in versions 2023 Update 24, 2025 Update 13