Is CVE-2024-0391 actively exploited?

No active exploitation of CVE-2024-0391 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-0391 be exploited remotely?

Yes. CVE-2024-0391 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2024-0391?

CVE-2024-0391 has a CVSS score of 5.3 (MEDIUM).

HOME VULNERABILITIESCVE-2024-0391

MEDIUM

CVE-2024-0391

CWE-204Published: May 11, 2026· Updated: May 13, 2026

5.3

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:6.6th

Official Description

The check user account lock states feature within the email OTP flow fails to validate user input, allowing an attacker to infer the existence of registered user accounts.

The discovery of valid usernames can increase the risk of brute-force and social engineering attacks. Attackers can leverage this information to craft targeted phishing campaigns or other malicious activities aimed at tricking users into divulging sensitive data, potentially damaging the organization's reputation and leading to regulatory non-compliance and financial consequences.

NVD Source

Technical Analysis

CVE-2024-0391 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.