VULNERABILITY INTELLIGENCE
CVE-2026-55198
CVSS score6.5 MEDIUM
EPSS probability0.35%
CISA KEVNot currently listed
Published2026-06-17
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Description
Hermes WebUI before 0.51.443 contains an authorization bypass vulnerability in the session export endpoint that allows authenticated users to access sessions from other profiles. The _handle_session_export handler in api/routes.py fails to verify active-profile ownership before serializing session data, enabling attackers to exfiltrate foreign session transcripts by guessing or knowing session identifiers.
Weakness classification
- disclosure@vulncheck.com: CWE-639