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"summary": "Mautic Vulnerable to User Enumeration via Response Timing",
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"details": "### Impact\nThe attacker can validate if a user exists by checking the time login returns. This timing difference can be used to enumerate valid usernames, after which an attacker could attempt brute force attacks.\n\n### Patches\nThis vulnerability has been patched, implementing a timing-safe form login authenticator that ensures consistent response times regardless of whether a user exists or not.\n\n### Technical Details\nThe vulnerability was caused by different response times when:\n- A valid username was provided (password hashing occurred)\n- An invalid username was provided (no password hashing occurred)\n\nThe fix introduces a `TimingSafeFormLoginAuthenticator` that performs a dummy password hash verification even for non-existent users, ensuring consistent timing.\n\n### Workarounds\nNo workarounds are available. Users should upgrade to the patched version.\n\n### References\n- https://owasp.org/www-project-web-security-testing-guide/latest/4-Web_Application_Security_Testing/03-Identity_Management_Testing/04-Testing_for_Account_Enumeration_and_Guessable_User_Account\n- https://github.com/mautic/mautic-security/pull/146",
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