Vulnerability in Nesquena Hermes-Webui
CVE-2026-58174
Hermes WebUI before 0.51.521 validates the workspace of an imported session under the active named profile but constructs the Session object without setting its profile in the /api/session/import handler, so the imported session is persisted with a null profile. Because a null profile is treated as the default profile by the profile authorization check, a user on the default profile can export the imported session transcript and use its session identifier to read files from the named profile's workspace, defeating the application's profile isolation.
EPSS: 0.003 (18.3th percentile) — read the EPSS interpretation.
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.
Affected products
- Nesquena Hermes-webui — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (release-notes)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com (issue-tracking)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-58174?
- CVE-2026-58174 is a medium-severity vulnerability in Nesquena Hermes-Webui, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 6.5/10. Published 2026-06-30.
- How severe is CVE-2026-58174?
- Medium severity. CVSS v3 base score is 6.5 out of 10.