CVE-2025-5256
Last modified
CVE-2025-5256 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. SummaryThis 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. EPSS estimates a 0.20% chance of exploitation in the next 30 days.
Description
SummaryThis 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. MitigationUpdate 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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2025-5256?
How severe is CVE-2025-5256?
How do I fix CVE-2025-5256?
How Strix Helps
- One Click Account Takeover in GranolaHow a notification link broke out of Electron and led to a one-click account takeover.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2025
- CVE-2025-52554n8n is a workflow automation platform. Prior to version 1.99…4.3
- CVE-2025-52555Ceph is a distributed object, block, and file storage platfo…6.5
- CVE-2025-52556rfc3161-client is a Python library implementing the Time-Sta…9.3
- CVE-2025-52557Mail-0's Zero is an open-source email solution. In version 0…8.6
- CVE-2025-52558changedetection.io is a free open source web page change det…7
- CVE-2025-52559Zulip is an open-source team chat application. From versions…5.4
- CVE-2025-52560Kanboard is project management software that focuses on the …8.8
- CVE-2025-52561HTMLSanitizer.jl is a Whitelist-based HTML sanitizer. Prior …6.9
- CVE-2025-52562Convoy is a KVM server management panel for hosting business…10
- CVE-2025-52563Chamilo is a learning management system. Prior to version 1.…6.1
- CVE-2025-52564Chamilo is a learning management system. Prior to version 1.…6.1
- CVE-2025-52565runc is a CLI tool for spawning and running containers accor…7.5
Are you affected by CVE-2025-5256?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST