CVE-2025-5256 – mautic/core

Package

Manager: composer
Name: mautic/core
Vulnerable Version: >=1.0.0 <4.4.16 || >=5.0.0-alpha <5.2.6 || >=6.0.0-alpha <6.0.2

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00036 pctl0.09104

Details

Mautic has an Open Redirect vulnerability on user unlock path. ### Summary This advisory addresses an Open Redirection vulnerability in Mautic's user unlocking endpoint. This vulnerability could be exploited by an attacker to redirect legitimate users to malicious websites, potentially leading to phishing attacks or the delivery of exploit kits. Open Redirection via `returnUrl` Parameter: An Open Redirection vulnerability exists in the `/s/action/unlock/user.user/0` endpoint. The `returnUrl` parameter, intended for post-action redirection, is not properly validated. This allows an attacker to craft a URL that, when clicked by a user, redirects them to an arbitrary external website controlled by the attacker. ### Mitigation Update Mautic to a version that properly validates or sanitizes the `returnUrl` parameter to ensure that redirects only occur to trusted, internal URLs or explicitly whitelisted domains.

Metadata

Created: 2025-05-28T17:39:45Z
Modified: 2025-05-28T20:04:40Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/05/GHSA-6vx9-9r2g-8373/GHSA-6vx9-9r2g-8373.json
CWE IDs: ["CWE-601"]
Alternative ID: GHSA-6vx9-9r2g-8373
Finding: F156
Auto approve: 1