CVE-2026-49956

Hermes WebUI < 0.51.269 Profile Isolation Bypass via sessions search

MEDIUM
6.5
CVSS Score
Published: June 9, 2026 at 04:10 PM UTC
Updated: July 23, 2026 at 07:32 PM UTC
2 products affected across 2 vendorsHermes Web UIHermes WebUI

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.51.269
Affected range stops below 0.51.269, so it looks safe — our inference, not a vendor statement
v < 0.51.269
Affected range stops below 0.51.269, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-862

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