PT-2026-48119 · Nesquena · Hermes-Webui

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-49957

Mitre

CVSS v3.1

7.7

High

Base vector

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

Hermes WebUI before version 0.51.269 contains a workspace boundary bypass vulnerability that allows authenticated attackers to circumvent blocked-root path checks by exploiting an early return in the SSH/remote terminal profile workspace resolution logic within remote terminal workspace candidate(). Attackers can configure a remote terminal working directory to a system directory such as /etc, causing the workspace resolution path to accept it as a trusted local workspace root before the is blocked workspace path() guard executes, enabling read access to local system files through workspace file-read helpers.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-49957

Affected Products

Hermes-Webui

References · 6

• https://github.com/nesquena/hermes-webui/commit/91a89fb5d5c0bf87932917f9914ad0150ea62fe4 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-49957 · Security Note
• https://github.com/nesquena/hermes-webui/pull/3744 · Note
• https://vulncheck.com/advisories/hermes-webui-workspace-boundary-bypass-via-api-workspace-py · Note
• https://github.com/nesquena/hermes-webui/pull/3731 · Note
• https://github.com/nesquena/hermes-webui/releases/tag/v0.51.269 · Note