Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1325 CNY

100%
Buy Us a Coffee

CVE-2026-55198— Hermes WebUI < 0.51.443 - Cross-Profile Session Data Exfiltration via Session Export Endpoint

CVSS 6.5 · Medium EPSS 0.27% · P19

Possible ATT&CK Techniques 1AI

T1530 · Data from Cloud Storage

Affected Version Matrix 2

VendorProductVersion RangeStatus
nesquenahermes-webui< 0.51.443affected
0.51.443unaffected
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-55198

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 < 0.51.443 - Cross-Profile Session Data Exfiltration via Session Export Endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
Hermes WebUI before 0.51.443 contains an authorization bypass vulnerability in the session export endpoint that allows authenticated users to access sessions from other profiles. The _handle_session_export handler in api/routes.py fails to verify active-profile ownership before serializing session data, enabling attackers to exfiltrate foreign session transcripts by guessing or knowing session identifiers.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nathan Esquenazi Hermes WebUI 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
nesquena Hermes WebUI是nesquena的Web服务器。 Nathan Esquenazi Hermes WebUI 0.51.443之前版本存在授权问题漏洞，该漏洞源于会话导出端点存在授权绕过，未能验证活动配置文件所有权，允许经过身份验证的用户访问其他配置文件的会话。
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

VendorProductAffected VersionsCPESubscribe
nesquenahermes-webui 0 ~ 0.51.443 -

II. Public POCs for CVE-2026-55198

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-55198

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-55198 (3)

Vendor Advisories for CVE-2026-55198 (1)

Other References for CVE-2026-55198 (1)

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

CVE-2026-538718.1 HIGHHermes WebUI < 0.51.368 - Profile-Scoped Authorization Bypass via Forged hermes_profile Co
CVE-2026-551976.5 MEDIUMHermes WebUI < 0.51.443 - Broken Access Control in /api/session Endpoint

IV. Related Vulnerabilities

Same product: hermes-webui
Same vendor: nesquena
Same weakness: CWE-639

V. Comments for CVE-2026-55198

No comments yet

Leave a comment