Vulnerability in Nesquena Hermes Webui
CVE-2026-11322
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (22.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Nesquena Hermes Webui — versions 0
Weakness classification (CWE)
References
- github.com/nesquena/hermes-webui/commit/7c48c376299b8058fd35127a59aefadded7e4a92 (patch)
- github.com/nesquena/hermes-webui/pull/3398 (issue-tracking, technical-description)
- www.vulncheck.com/advisories/hermes-webui-before-path-traversal-via-symlink-wor… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-11322?
- CVE-2026-11322 is a medium-severity vulnerability in Nesquena Hermes Webui, classified under Improper Link Resolution Before File Access. CVSS score: 6.5/10. Published 2026-06-04.
- How severe is CVE-2026-11322?
- Medium severity. CVSS v3 base score is 6.5 out of 10.