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.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/nesquena/hermes-webui/commit/3cc5839bf303fa6758bfdac538507407a2929655 Patch
- https://github.com/nesquena/hermes-webui/pull/409 Exploit, Issue Tracking, Patch, Vendor Advisory
- https://github.com/nesquena/hermes-webui/pull/412 Issue Tracking, Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.2 · get-hermesNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:get-hermes:hermes_web_ui:*:*:*:*:*:*:*:*
References 6
- https://github.com/nesquena/hermes-webui/commit/3cc5839bf303fa6758bfdac538507407a2929655 Patch
- https://github.com/nesquena/hermes-webui/pull/409 Exploit, Issue Tracking, Patch, Vendor Advisory
- https://github.com/nesquena/hermes-webui/pull/412 Issue Tracking, Patch
- https://github.com/nesquena/hermes-webui/releases/tag/v0.50.132 Product, Release Notes
- https://github.com/nesquena/hermes-webui/releases/tag/v0.50.32 Product, Release Notes
- https://www.vulncheck.com/advisories/nesquena-hermes-webui-arbitrary-file-deletion-via-unvalidated-session-id Third Party Advisory