Hermes WebUI contains an arbitrary file deletion vulnerability in the /api/session/delete endpoint that allows authenticated attackers to…
CVE-2026-6832
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 sessionid parameter. Attackers can exploit unvalidated session identifiers to construct paths that bypass the SESSIONDIR boundary and delete writable JSON files on the host system.
Assessment
- CVSS
- 7.2 (v4.0)
- Severity
- High
- EPSS
- 0.48% chance of exploitation in the next 30 days
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 21 April 2026
- Last updated
- 8 November 2026
- Affected
- nesquena · hermes-webui
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
At the source
References
- https://github.com/nesquena/hermes-webui/pull/409
- https://github.com/nesquena/hermes-webui/pull/412
- https://github.com/nesquena/hermes-webui/commit/3cc5839bf303fa6758bfdac538507407a2929655
- https://github.com/nesquena/hermes-webui/releases/tag/v0.50.132
- https://github.com/nesquena/hermes-webui/releases/tag/v0.50.32
- https://www.vulncheck.com/advisories/nesquena-hermes-webui-arbitrary-file-deletion-via-unvalidated-session-id
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