What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-13 · updated 2026-10-26
• Weakness: CWE-305

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.

Affected products

• Pachno: 1.0.6

References

• https://www.vulncheck.com/advisories/pachno-open-redirection-via-return-to-parameter
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2026-5981.php

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