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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| nesquena | hermes-webui | < 0.51.443 | 0.51.443 |
References
- hermes-webui v0.51.443 Release Notes release-notes
- Researcher Pull Request issue-tracking patch
- Maintainer Pull Request issue-tracking patch
- Patch Commit patch
- https://www.vulncheck.com/advisories/hermes-webui-cross-profile-session-data-exfiltration-via-session-export-endpoint third-party-advisory