CVE-2025-62399CWE-307

Moodle: password brute force risk when mobile/web services enabled

High · published October 23, 2025

CVSS v3.1
7.5
EPSS
0%
Percentile
33.5
In the wild
Unconfirmed
What it is

⚡ Moodle's authentication endpoints are playing a risky game of trust! Attackers can unleash a barrage of password attempts without a robust defense. 🔐 Think of it like a hotel with a front desk that lets anyone keep trying different keys without checking if they're guests—eventually, someone will find a way in! 🏨 This vulnerability opens the door for attackers to potentially gain unauthorized access by brute-forcing their way into accounts, which could lead to data leaks or account takeovers. If they succeed, sensitive information could be compromised, leaving users vulnerable and your reputation in shambles!

Put simply

Think of it like a hotel with a front desk that lets anyone keep trying different keys without checking if they're guests—eventually, someone will find a way in! 🏨 Moodle’s mobile and web service authentication endpoints fail to sufficiently limit repeated password attempts, allowing attackers to exploit this weakness through brute-force attacks without facing any locking mechanisms.

What to do

This vulnerability opens the door for attackers to potentially gain unauthorized access by brute-forcing their way into accounts, which could lead to data leaks or account takeovers. If they succeed, sensitive information could be compromised, leaving users vulnerable and your reputation in shambles! To mitigate this threat, implement rate limiting on login attempts and consider enabling account lockout after several unsuccessful tries. Updating to the latest version of Moodle, if available, may also include enhancements to authentication security measures. You've got this! With the right changes, you can fortify your defenses and keep your users safe! 🛡️

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00404 · 33.5th percentile
Weakness
CWE-307 · Improper Restriction of Excessive Authentication Attempts
Published
2025-10-23T11:28Z
EPSS history
Timeline
  • 23 OCT 11:28Z
    Moodle: password brute force risk when mobile/web services enabled
    cvelistv5