CVE-2026-6832 HIGH

CVE-2026-6832: Nesquena Hermes WebUI Arbitrary File Deletion via Unvalidated session_id

Vendor Nesquena
Product hermes-webui
Weakness CWE-22 · Path traversal
Published April 21, 2026
Last update May 14, 2026

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Hermes WebUI contains an arbitrary file deletion vulnerability in the /api/session/delete endpoint that allows authenticated attackers to delete files outside the session directory by supplying an absolute path or path traversal payload in the session_id parameter. Attackers can exploit unvalidated session identifiers to construct paths that bypass the SESSION_DIR boundary and delete writable JSON files on the host system.

Key dates

02Disclosure timeline

April 21, 2026 CVE published
May 14, 2026 Record updated