---
id: CVE-2026-49956
title: Hermes WebUI < 0.51.269 Profile Isolation Bypass via sessions search
summary: >-
  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. A…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-862
vendor: nesquena
product: hermes-webui
affected:
  - hermes-webui < 0.51.269
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-09T17:50:27.441317Z'
exploitAvailable: true
published: '2026-06-09'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T14:04:58.175Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-49956'
references:
  - url: 'https://github.com/nesquena/hermes-webui/releases/tag/v0.51.269'
    label: hermes-webui 0.51.269 Release Notes
  - url: 'https://github.com/nesquena/hermes-webui/pull/3646'
  - url: 'https://github.com/nesquena/hermes-webui/pull/3672'
  - url: >-
      https://github.com/nesquena/hermes-webui/commit/2c7b530071bb29ae4184e83e33be5799d529568e
  - url: >-
      https://www.vulncheck.com/advisories/hermes-webui-profile-isolation-bypass-via-sessions-search
tags:
  - cve.org
  - exploit-available
epss: 0.00272
epssPercentile: 0.19706
ingestedAt: '2026-11-08T14:51:22.383Z'
---

## Overview

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.

## Affected

- `hermes-webui < 0.51.269`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.