Home

Description

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.

PUBLISHED Reserved 2026-04-08 | Published 2026-04-13 | Updated 2026-05-12 | Assigner VulnCheck




HIGH: 7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Problem types

Authentication Bypass by Primary Weakness

Product status

1.0.6
affected

Credits

LiquidWorm as Gjoko Krstic of Zero Science Lab finder

References

www.zeroscience.mk/en/vulnerabilities/ZSL-2026-5981.php (Zero Science Lab Disclosure) third-party-advisory

www.vulncheck.com/...pen-redirection-via-return-to-parameter (VulnCheck Advisory: Pachno 1.0.6 Open Redirection via return_to Parameter) third-party-advisory

cve.org (CVE-2026-40039)

nvd.nist.gov (CVE-2026-40039)

Download JSON