nesquena hermes-webui up to 0.51.520 /api/session/import permission assignment

Summaryinfo

A vulnerability was found in nesquena hermes-webui up to 0.51.520. It has been declared as problematic. The impacted element is an unknown function of the file /api/session/import. The manipulation results in permission assignment. This vulnerability was named CVE-2026-58174. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in nesquena hermes-webui up to 0.51.520. Affected is some unknown processing of the file /api/session/import. The manipulation with an unknown input leads to a permission assignment vulnerability. CWE is classifying the issue as CWE-732. The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. This is going to have an impact on confidentiality. CVE summarizes:

Hermes WebUI before 0.51.521 validates the workspace of an imported session under the active named profile but constructs the Session object without setting its profile in the /api/session/import handler, so the imported session is persisted with a null profile. Because a null profile is treated as the default profile by the profile authorization check, a user on the default profile can export the imported session transcript and use its session identifier to read files from the named profile's workspace, defeating the application's profile isolation.

The weakness was presented by Chia Min Jun Lennon. The advisory is available at github.com. This vulnerability is traded as CVE-2026-58174 since 06/29/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit.

Upgrading to version 0.51.521 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 3d5ef4758e920ba6888d49aaa4341de214693496 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• nesquena

Name

• hermes-webui

Version

• 0.51.520

License

• open-source

Website

• Product: https://github.com/nesquena/hermes-webui/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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