CVE-2024-45231 in Django
Summary
by MITRE • 10/08/2024
An issue was discovered in Django v5.1.1, v5.0.9, and v4.2.16. The django.contrib.auth.forms.PasswordResetForm class, when used in a view implementing password reset flows, allows remote attackers to enumerate user e-mail addresses by sending password reset requests and observing the outcome (only when e-mail sending is consistently failing).
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Analysis
by VulDB Data Team • 01/29/2026
The vulnerability identified as CVE-2024-45231 represents a significant information disclosure weakness within the Django web framework that specifically affects versions 5.1.1, 5.0.9, and 4.2.16. This flaw resides in the django.contrib.auth.forms.PasswordResetForm class which is commonly utilized in web applications implementing standard password reset functionality. The vulnerability arises from the application's inconsistent response behavior when processing password reset requests, creating a timing or response-based side channel that can be exploited by malicious actors to determine whether specific email addresses exist within the system's user base. The security implications extend beyond simple user enumeration as they potentially enable further targeted attacks such as account takeover attempts or social engineering operations.
The technical mechanism behind this vulnerability stems from how the PasswordResetForm handles email address validation during the password reset process. When an attacker submits a password reset request for a known email address, the system typically processes the request and attempts to send a reset email. However, when email delivery fails consistently due to configuration issues or network problems, the application provides different response patterns compared to when the email is successfully sent or when the email address doesn't exist in the system. This differential response creates a timing-based side channel that attackers can monitor and analyze to infer the existence of specific email addresses. The vulnerability is particularly dangerous because it operates silently without requiring authentication or special privileges, making it accessible to any remote attacker with basic network connectivity.
The operational impact of CVE-2024-45231 extends beyond immediate information disclosure concerns and creates a foundation for more sophisticated attack vectors. Security professionals should note that this vulnerability directly violates the principle of least privilege and information hiding, as it exposes user account information through indirect means. The flaw enables what cybersecurity researchers classify as account enumeration attacks under the MITRE ATT&CK framework's T1078 technique for Valid Accounts. Additionally, the vulnerability aligns with CWE-200 (Information Exposure) and CWE-305 (Authentication Bypass Using Alternate Path or Channel) categories, as it provides attackers with information that can facilitate further exploitation. Organizations using affected Django versions face potential reputational damage, regulatory compliance issues, and increased risk of credential stuffing attacks once attacker has compiled a list of valid email addresses.
Mitigation strategies for CVE-2024-45231 should focus on implementing consistent error handling and response patterns for all password reset operations regardless of email delivery status. The recommended approach involves modifying the application's password reset flow to return identical responses for all requests, ensuring that successful email delivery attempts and failed delivery attempts produce the same user-facing output. This approach aligns with the principle of defensive programming and helps prevent timing-based side channel attacks. Organizations should also implement rate limiting mechanisms to prevent automated enumeration attempts and consider implementing additional authentication factors or CAPTCHA systems to further protect password reset functionality. The most effective long-term solution involves upgrading to patched versions of Django where this vulnerability has been addressed, as the framework maintainers have implemented consistent response handling that eliminates the information disclosure risk. Security teams should also conduct comprehensive vulnerability assessments of their Django applications to identify any custom implementations that might be susceptible to similar enumeration attacks and ensure proper logging and monitoring of password reset activities to detect potential exploitation attempts.