CVE-2026-40043CWE-639

Pachno 1.0.6 Authentication Bypass via runSwitchUser()

High · published April 13, 2026

CVSS v4.0
7.1
EPSS
1%
Percentile
43.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.1 · HIGH
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
EPSS
0.00525 · 43.7th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-04-13T18:11Z
EPSS history
Timeline
  • 13 APR 18:11Z
    Pachno 1.0.6 Authentication Bypass via runSwitchUser()
    cvelistv5