Path traversal in Cisco DNA Center (Catalyst Center) - CVE-2026-20191
Published: July 2, 2026
Vulnerability identifier: #VU136667
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-20191
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco DNA Center (Catalyst Center)
Cisco DNA Center (Catalyst Center)
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to path traversal in the HTTP request handling component when processing user-supplied input. A remote attacker can send a crafted HTTP request to disclose sensitive information.
The issue allows reading arbitrary files from a restricted container on the affected device.
How to mitigate CVE-2026-20191
Install security update from vendor's website.