Accela Civic Platform Citizen Access portal contains cross-site scripting and arbitrary file upload vulnerabilities.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') - CVE-2016-5660
Accela Civic Platform Citizen Access portal contains a cross-site scripting (XSS) vulnerability in the iframeid parameter of AttachmentsList.aspx.
A remote, unauthenticated attacker may be able to execute arbitrary script in the context of the end-user's browser session. A remote, authenticated attacker may bypass file restrictions and upload arbitrary files, leading to arbitrary code execution with application privileges.
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Thanks to Ahmed Sherif of OffensiveBits for reporting this vulnerability.