CVE-2026-40043 HIGH

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

Vendor Pancho
Product Pachno
Weakness CWE-639 · IDOR
Published April 13, 2026
Last update April 13, 2026

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 13, 2026 CVE published
April 13, 2026 Record updated