CVE-2026-20172 MEDIUM

CVE-2026-20172: Cisco Enterprise Chat and Email Lite Agent File Upload Vulnerability

Vendor Cisco
Product Cisco Enterprise Chat and Email
Weakness CWE-646
Published May 6, 2026
Last update May 6, 2026

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

A vulnerability in the Lite Agent feature of Cisco Enterprise Chat and Email (ECE) could allow an authenticated, remote attacker to conduct browser-based attacks. To exploit this vulnerability, the attacker must have valid credentials for a user account with at least the role of Agent. This vulnerability is due to inadequate validation of file contents during file upload operations. An attacker could exploit this vulnerability by uploading a file that contains malicious scripts or HTML code, which the application could make available to other users to access. A successful exploit could allow the attacker to execute the contents of that file in the browser of a user and conduct browser-based attacks. 

Key dates

02Disclosure timeline

May 6, 2026 CVE published
May 6, 2026 Record updated