Path traversal in Tenable Nessus - CVE-2026-3493
Published: March 3, 2026
Vulnerability identifier: #VU123484
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-3493
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Tenable Network Security
Affected software:
Tenable Nessus
Tenable Nessus
Detailed vulnerability description
The vulnerability allows a remote user to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in Nessus Manager. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.
How to mitigate CVE-2026-3493
Install updates from vendor's website.