Reliance on File Name or Extension of Externally-Supplied File in Enterprise Chat and Email - CVE-2026-20172
Published: May 7, 2026
Vulnerability identifier: #VU130283
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-20172
CWE-ID: CWE-646
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to inadequate validation of file contents during file upload operations in the Lite Agent feature. A remote user can upload a malicious file and conduct browser-based attacks.
Affected software
Enterprise Chat and Email
How to mitigate CVE-2026-20172
Install updates from vendor's website.
Enterprise Chat and Email - update to 15.0(1)ES202603