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CVE-2026-53871— Hermes WebUI < 0.51.368 - Profile-Scoped Authorization Bypass via Forged hermes_profile Cookie

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.

nesquena Hermes WebUI是nesquena的Web服务器。 Nathan Esquenazi Hermes WebUI 0.51.368之前版本存在会话机制问题漏洞，该漏洞源于get_profile_cookie()函数接受未经验证的profile名称，可能导致经过身份验证的攻击者伪造hermes_profile cookie值绕过基于profile的授权检查，跨不同profile访问会话、文件和资源。

CVSS 8.1 · High EPSS 0.50% · P41

Affected Version Matrix 2

VendorProduct Version RangeStatus
nesquena hermes-webui < 0.51.368 affected
0.51.368 unaffected
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I. Basic Information for CVE-2026-53871

Vulnerability Information
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Vulnerability Title
Hermes WebUI < 0.51.368 - Profile-Scoped Authorization Bypass via Forged hermes_profile Cookie
Source: CVE Program / CVE List V5
Vulnerability Description
Hermes WebUI before 0.51.368 contains an authorization bypass vulnerability in the get_profile_cookie() function that accepts unauthenticated profile names from the hermes_profile cookie. An authenticated attacker can forge the hermes_profile cookie value to bypass profile-scoped authorization checks and access sessions, files, and resources across different profiles.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在信任Cookie未进行验证与完整性检查
Source: CVE Program / CVE List V5
Vulnerability Title
Nathan Esquenazi Hermes WebUI 会话机制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
nesquena Hermes WebUI是nesquena的Web服务器。 Nathan Esquenazi Hermes WebUI 0.51.368之前版本存在会话机制问题漏洞，该漏洞源于get_profile_cookie()函数接受未经验证的profile名称，可能导致经过身份验证的攻击者伪造hermes_profile cookie值绕过基于profile的授权检查，跨不同profile访问会话、文件和资源。
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 ~ 0.51.368 -

II. Public POCs for CVE-2026-53871

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 9602 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-53871

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Patches & Fixes for CVE-2026-53871 (3)

Vendor Advisories for CVE-2026-53871 (1)

Other References for CVE-2026-53871 (1)

Same Patch Batch · nesquena · 2026-06-17 · 3 CVEs total

CVE-2026-55198 6.5 MEDIUM Hermes WebUI < 0.51.443 - Cross-Profile Session Data Exfiltration via Session Export Endpo
CVE-2026-55197 6.5 MEDIUM Hermes WebUI < 0.51.443 - Broken Access Control in /api/session Endpoint

IV. Related Vulnerabilities

Same product: hermes-webui
Same vendor: nesquena
Same weakness: CWE-565

V. Comments for CVE-2026-53871

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