PT-2026-34193 · Nesquena · Hermes-Webui

Published 2026-04-21 · Updated 2026-04-26 · CVE-2026-6829

Positive Technologies (AI Summary)

CVSS v3.1

6.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions nesquena hermes-webui (affected versions not specified)

Description A trust-boundary failure allows authenticated attackers to set or change a session workspace to an arbitrary existing directory on disk. This is achieved by manipulating workspace path parameters in the endpoints "/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 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-6829

Affected Products

Hermes-Webui

References · 6

• https://github.com/nesquena/hermes-webui/commit/2a7a5ddfaf39e3b0094b7ac37e9f1dbcf40a3918 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-6829 · Security Note
• https://github.com/nesquena/hermes-webui/releases/tag/v0.50.34 · Note
• https://github.com/nesquena/hermes-webui/pull/416 · Note
• https://twitter.com/CVEnew/status/2048481098116551111 · Twitter Post
• https://vulncheck.com/advisories/nesquena-hermes-webui-arbitrary-workspace-directory-access · Note