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CVE-2026-58174— Hermes WebUI < 0.51.521 - Cross-Profile Authorization Bypass via Unset Session Profile on Import

Quick assessment

Affected
nesquena hermes-webui
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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。 Hermes WebUI 0.51.521之前版本存在权限许可和访问控制问题漏洞，该漏洞源于在/api/session/import处理器中未设置Session对象的profile，导致导入的会话以空profile持久化，空profile被视为默认profile，默认profile用户可导出导入的会话记录并使用其会话标识符读取命名profile工作区中的文件，破坏应用程序的profile

CVSS 6.5 · Medium EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token

Affected Version Matrix 1

VendorProduct Version RangeStatus
nesquena hermes-webui < 0.51.521 affected
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I. Basic Information for CVE-2026-58174

Vulnerability Information
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Vulnerability Title
Hermes WebUI < 0.51.521 - Cross-Profile Authorization Bypass via Unset Session Profile on Import
Source: CVE Program / CVE List V5
Vulnerability Description
Hermes WebUI before 0.51.521 validates the workspace of an imported session under the active named profile but constructs the Session object without setting its profile in the /api/session/import handler, so the imported session is persisted with a null profile. Because a null profile is treated as the default profile by the profile authorization check, a user on the default profile can export the imported session transcript and use its session identifier to read files from the named profile's workspace, defeating the application's profile isolation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
Source: CVE Program / CVE List V5
Vulnerability Title
Nathan Esquenazi Hermes WebUI 权限许可和访问控制问题漏洞
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。 Hermes WebUI 0.51.521之前版本存在权限许可和访问控制问题漏洞，该漏洞源于在/api/session/import处理器中未设置Session对象的profile，导致导入的会话以空profile持久化，空profile被视为默认profile，默认profile用户可导出导入的会话记录并使用其会话标识符读取命名profile工作区中的文件，破坏应用程序的profile
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 ~ 0.51.521 -

II. Public POCs for CVE-2026-58174

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III. Intelligence Information for CVE-2026-58174

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Patches & Fixes for CVE-2026-58174 (4)

Vendor Advisories for CVE-2026-58174 (1)

IV. Related Vulnerabilities

Same product: hermes-webui
Same vendor: nesquena
Same weakness: CWE-732

V. Comments for CVE-2026-58174

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