VULNERABILITY INTELLIGENCE
CVE-2026-40043
CVSS score6.5 MEDIUM
EPSS probability0.38%
CISA KEVNot currently listed
Published2026-04-13
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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.
Weakness classification
- disclosure@vulncheck.com: CWE-639