CVE-2026-6829

nesquena hermes-webui contains a trust-boundary failure vulnerability that allows authenticated attackers to set or change a session workspace to an arbitrary existing directory on disk by manipulating workspace path parameters in endpoints such as /api/session/new, /api/session/update, /api/chat/start, and /api/workspaces/add. Attackers can repoint a session workspace to a directory outside the intended trusted root and then use ordinary file read and write APIs to access or modify files outside the intended workspace boundary within the permissions of the hermes-webui process.

CVSS v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/nesquena/hermes-webui/commit/2a7a5ddfaf39e3b0094b7ac37e9f1dbcf40a3918
https://github.com/nesquena/hermes-webui/pull/416
https://github.com/nesquena/hermes-webui/releases/tag/v0.50.34
https://www.vulncheck.com/advisories/nesquena-hermes-webui-arbitrary-workspace-directory-access

Configurations

No configuration.

History

21 Apr 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-21 22:16

Updated : 2026-04-22 21:20

NVD link : CVE-2026-6829

Mitre link : CVE-2026-6829

CVE.ORG link : CVE-2026-6829

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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