CVE-2026-6829
Trust-Boundary Bypass in nesquena hermes-webui Allows Arbitrary Directory Access
Publication date: 2026-04-21
Last updated on: 2026-04-21
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| nesquena | hermes-webui | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-22 | The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The vulnerability in nesquena hermes-webui is a trust-boundary failure that allows authenticated attackers to manipulate session workspace paths. By changing parameters in certain API endpoints, attackers can set a session workspace to any existing directory on the disk, even outside the intended trusted root directory.
This means attackers can access or modify files outside the intended workspace boundary using the normal file read and write APIs, within the permissions of the hermes-webui process.
How can this vulnerability impact me? :
This vulnerability can allow attackers to access or modify files outside the intended workspace, potentially leading to unauthorized data exposure or data tampering.
Since the attacker operates within the permissions of the hermes-webui process, the impact depends on what files and data that process can access, which could include sensitive or critical system files.