CVE-2026-11322

Hermes WebUI before 0.51.221 Path Traversal via Symlink Workspace Bypass

MEDIUM
6.5
CVSS Score
Published: June 4, 2026 at 09:58 PM UTC
Updated: July 22, 2026 at 08:24 PM UTC
2 products affected across 2 vendorsHermes Web UIHermes WebUI

Using Hermes WebUI by nesquena?

Get instant alerts when new vulnerabilities affect Hermes WebUI - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

Hermes WebUI prior to v0.51.221 contains a path traversal vulnerability that allows attackers to escape the workspace boundary by supplying symlinks that resolve to files or directories outside the designated workspace root. Attackers can exploit the workspace file and listing APIs, which resolve symlink targets without enforcing that the final path remains within the workspace, to read external host files accessible to the server process and disclose sensitive data such as SSH keys, cloud credentials, or application tokens.

Affected

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

v < 0.51.221
Affected range stops below 0.51.221, so it looks safe — our inference, not a vendor statement
v < 0.51.221
Affected range stops below 0.51.221, 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-59

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card