CVE-2026-49956 HIGH

CVE-2026-49956: Hermes WebUI < 0.51.269 Profile Isolation Bypass via sessions search

Vendor Nesquena
Product hermes-webui
Weakness CWE-862 · Missing authorization
Published June 9, 2026
Last update June 9, 2026

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Hermes WebUI before version 0.51.269 contains a profile isolation bypass vulnerability that allows authenticated users to access data belonging to other profiles by querying the session search endpoint without active-profile filtering. Attackers can send requests to the sessions search handler to retrieve session titles and transcript message content from profiles other than their own active profile.

Key dates

02Disclosure timeline

June 9, 2026 CVE published
June 9, 2026 Record updated