CVE-2026-6829: nesquena hermes-webui · Path Traversal
Affects nesquena hermes-webuiSource CVE Database V5
Not known to be exploited · CVSS 5.3 Medium : upgrade to PR #416 when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in PR #416
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 21 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade nesquena hermes-webui to PR #416.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| nesquenahermes-webui | Affected
| Fixed in
|
GitHubnesquena/hermes-webuipkg:github/nesquena/hermes-webuiOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, restrict access to the affected API endpoints to trusted users only and monitor for suspicious activity related to workspace path manipulation.
Description
nesquena hermes-webui contains a trust-boundary failure vulnerability that allows authenticated attackers to set or change a session workspace to an arbitrary existing directory on disk by manipulating workspace path parameters in endpoints such as /api/session/new, /api/session/update, /api/chat/start, and /api/workspaces/add. Attackers can repoint a session workspace to a directory outside the intended trusted root and then use ordinary file read and write APIs to access or modify files outside the intended workspace boundary within the permissions of the hermes-webui process.
References
- github.com/nesquena/hermes-webui/pull/416 (opens in a new tab)
- github.com/nesquena/hermes-webui/commit/2a7a5ddfaf39e3b0094b7ac37e9f1dbcf40a3918 (opens in a new tab)
- github.com/nesquena/hermes-webui/releases/tag/v0.50.34 (opens in a new tab)
- vulncheck.com/advisories/nesquena-hermes-webui-arbitrary-workspace-directory-access (opens in a new tab)