CVE-2026-6832
Nesquena Hermes WebUI Arbitrary File Deletion via Unvalidated session_id
- State
- Published
- Severity
- 7.2 High
- Published
- Apr 21, 2026
- Updated
- Jul 14, 2026
- Reserved
- Apr 21, 2026
Description
Hermes WebUI contains an arbitrary file deletion vulnerability in the /api/session/delete endpoint that allows authenticated attackers to delete files outside the session directory by supplying an absolute path or path traversal payload in the session_id parameter. Attackers can exploit unvalidated session identifiers to construct paths that bypass the SESSION_DIR boundary and delete writable JSON files on the host system.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.2 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H | VulnCheck |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
hermes-webuinesquena |
|
References
- Pull Requestissue-tracking
- Pull Requestissue-tracking
- Patch Commitpatch
- Release Notesthird-party-advisory
- Release Notesthird-party-advisory
- https://www.vulncheck.com/advisories/nesquena-hermes-webui-arbitrary-file-deletion-via-unvalidated-session-idthird-party-advisory
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