CVE-2026-40039 HIGH

CVE-2026-40039: Pachno 1.0.6 Open Redirection via return_to Parameter

Vendor Pachno
Product Pachno
Weakness CWE-305
Published April 13, 2026
Last update May 12, 2026
View on NVD All CVEs

CVSS base score

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

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Pachno 1.0.6 contains an open redirection vulnerability that allows attackers to redirect users to arbitrary external websites by manipulating the return_to parameter. Attackers can craft malicious login URLs with unvalidated return_to values to conduct phishing attacks and steal user credentials.

Key dates

02Disclosure timeline

April 13, 2026 CVE published
May 12, 2026 Record updated