EUVD-2026-22051
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionNVD
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.
AnalysisAI
Privilege escalation in Pachno 1.0.6 allows low-privilege authenticated users to hijack administrator sessions by manipulating the original_username cookie in the runSwitchUser() action, enabling unauthorized access to user ID 1 (admin) session tokens and password hashes. SSVC confirms proof-of-concept exists with partial technical impact, though EPSS indicates low exploitation probability (0.07%, 22nd percentile) and no active exploitation confirmed via CISA KEV.
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RemediationAI
Within 24 hours: Inventory all Pachno 1.0.6 deployments and document current user access levels. Within 7 days: Implement input validation and session integrity controls on the runSwitchUser() action (disable or restrict user-switching functionality to administrators only); monitor authentication logs for suspicious session transitions. …
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External POC / Exploit Code
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