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CVE-2026-40043— Pachno 1.0.6 Authentication Bypass via runSwitchUser()

CVSS 6.5 · Medium EPSS 0.07% · P22
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I. Basic Information for CVE-2026-40043

Vulnerability Information
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Vulnerability Title
Pachno 1.0.6 Authentication Bypass via runSwitchUser()
Source: NVD (National Vulnerability Database)
Vulnerability Description
Pachno 1.0.6 contains an authentication bypass vulnerability in the runSwitchUser() action that allows authenticated low-privilege users to escalate privileges by manipulating the original_username cookie. Attackers can set the client-controlled original_username cookie to any value and request a switch to user ID 1 to obtain session tokens or password hashes belonging to administrator accounts.
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
Pachno 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pachno是Pachno开源的一个用于协作的开源平台。 Pachno 1.0.6版本存在安全漏洞，该漏洞源于runSwitchUser操作存在身份验证绕过，可能导致低权限用户提升权限。
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
panchoPachno 1.0.6 -

II. Public POCs for CVE-2026-40043

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III. Intelligence Information for CVE-2026-40043

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Same Patch Batch · pancho · 2026-04-13 · 7 CVEs total

CVE-2026-400429.8 CRITICALPachno 1.0.6 Wiki TextParser XML External Entity Injection
CVE-2026-400449.8 CRITICALPachno 1.0.6 FileCache Deserialization Remote Code Execution
CVE-2026-400408.8 HIGHPachno 1.0.6 Unrestricted File Upload Remote Code Execution
CVE-2026-400387.2 HIGHPachno 1.0.6 Stored Cross-Site Scripting via Multiple Parameters
CVE-2026-400396.5 MEDIUMPachno 1.0.6 Open Redirection via return_to Parameter
CVE-2026-400414.3 MEDIUMPachno 1.0.6 Cross-Site Request Forgery via State-Changing Endpoints

IV. Related Vulnerabilities

Same product: Pachno
Same vendor: pancho
Same weakness: CWE-639

V. Comments for CVE-2026-40043

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