Description
Hermes WebUI before 0.51.443 contains a broken access control vulnerability in the /api/session endpoint that allows authenticated users to disclose cross-profile session transcripts. Attackers can bypass profile boundary checks by directly querying session IDs belonging to other profiles via GET /api/session?session_id=<foreign_id>&messages=1 to retrieve unauthorized conversation transcripts and metadata.
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-broken-access-control-in-api-session-endpoint third-party-advisory