Open redirect in Mautic - CVE-2025-5256
Published: June 23, 2025
Vulnerability identifier: #VU111746
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2025-5256
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to redirect victims to arbitrary URL.
The vulnerability exists due to improper sanitization of user-supplied data in user unlocking endpoint within "returnUrl" parameter. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.
Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.
Affected software
Mautic
How to mitigate CVE-2025-5256
Install updates from vendor's website.
Mautic - addressed in versions 4.4.16, 5.2.6, 6.0.2