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CVE-2026-58123— Hermes WebUI < 0.51.788 Unauthenticated RCE via Terminal API

Quick assessment

Affected
nesquena hermes-webui
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nathan Esquenazi Hermes WebUI是Nathan Esquenazi个人开发者的Web服务器。 Nathan Esquenazi Hermes WebUI 0.51.788之前版本存在授权问题漏洞，该漏洞源于未授权访问终端API端点，可能导致远程攻击者执行任意shell命令。

CVSS 9.8 · Critical EPSS 4.65% · P91

Public Exploits 1

Nuclei · 1 CVE-2026-58123.yaml [template]

Affected Version Matrix 1

VendorProduct Version RangeStatus
nesquena hermes-webui < 0.51.788 affected
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I. Basic Information for CVE-2026-58123

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Hermes WebUI < 0.51.788 Unauthenticated RCE via Terminal API
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Nathan Esquenazi Hermes WebUI 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nathan Esquenazi Hermes WebUI是Nathan Esquenazi个人开发者的Web服务器。 Nathan Esquenazi Hermes WebUI 0.51.788之前版本存在授权问题漏洞，该漏洞源于未授权访问终端API端点，可能导致远程攻击者执行任意shell命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nesquena hermes-webui 0 ~ 0.51.788 -

II. Public POCs for CVE-2026-58123

# POC Description Source Link Shenlong Link
1 Hermes WebUI < 0.51.788 contains an unauthenticated remote code execution caused by improper access control in embedded terminal API endpoints, letting remote attackers execute arbitrary shell commands without credentials. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-58123.yaml POC Details
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Qwen3.6-35B-A3B · 6552 chars
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III. Intelligence Information for CVE-2026-58123

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Patches & Fixes for CVE-2026-58123 (2)

Vendor Advisories for CVE-2026-58123 (1)

Vendor Pages for CVE-2026-58123 (1)

IV. Related Vulnerabilities

Same product: hermes-webui
Same vendor: nesquena
Same weakness: CWE-306

V. Comments for CVE-2026-58123

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