CVE-2026-58123

Hermes WebUI before 0.51.788 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute arbitrary shell commands by accessing the embedded terminal API endpoints without credentials. Attackers can create a session, attach a PTY shell, and write arbitrary commands through the terminal input endpoint to achieve full command execution as the server process user via four sequential unauthenticated HTTP requests.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/nesquena/hermes-webui/commit/d257e5f36cfa9328600c8bde6f0de09a6ad9b6f4
https://github.com/nesquena/hermes-webui/pull/5268
https://github.com/nesquena/hermes-webui/releases/tag/v0.51.788
https://www.vulncheck.com/advisories/hermes-webui-unauthenticated-rce-via-terminal-api

Configurations

No configuration.

History

09 Jul 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-09 22:17

Updated : 2026-07-14 22:17

NVD link : CVE-2026-58123

Mitre link : CVE-2026-58123

CVE.ORG link : CVE-2026-58123

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

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