CVE-2026-11322
MEDIUMHermes WebUI before 0.51.221 Path Traversal via Symlink Workspace Bypass
Title source: cnaDescription
Hermes WebUI prior to v0.51.221 contains a path traversal vulnerability that allows attackers to escape the workspace boundary by supplying symlinks that resolve to files or directories outside the designated workspace root. Attackers can exploit the workspace file and listing APIs, which resolve symlink targets without enforcing that the final path remains within the workspace, to read external host files accessible to the server process and disclose sensitive data such as SSH keys, cloud credentials, or application tokens.
References (3)
Core 3
Core References
Technical Description technical-description
https://github.com/nesquena/hermes-webui/pull/3398
Patch patch
https://github.com/nesquena/hermes-webui/commit/7c48c376299b8058fd35127a59aefadded7e4a92
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/hermes-webui-before-path-traversal-via-symlink-workspace-bypass
Scores
CVSS v3
6.5
EPSS
0.0032
EPSS Percentile
23.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-59
Status
published
Products (1)
nesquena/Hermes WebUI
< 0.51.221
Published
Jun 04, 2026
Tracked Since
Jun 05, 2026