CVE-2022-30600

CRITICAL

Moodle 3.9-3.9.13 and 4.0 - Account Lockout Bypass via Incorrect Failed Login Calculation

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2022-30600. PoCs published by Boonjune.

AI-analyzed exploit summary This repository contains a proof-of-concept exploit for CVE-2022-30600, which allows bypassing the account lockout threshold in Moodle by sending concurrent login requests. The exploit includes both Python and C++ implementations that demonstrate the race condition vulnerability.

Description

A flaw was found in moodle where logic used to count failed login attempts could result in the account lockout threshold being bypassed.

Exploits (1)

nomisec WORKING POC 3 stars

by Boonjune · poc

https://github.com/Boonjune/POC-CVE-2022-30600

View Code ZIP pw:eip

This repository contains a proof-of-concept exploit for CVE-2022-30600, which allows bypassing the account lockout threshold in Moodle by sending concurrent login requests. The exploit includes both Python and C++ implementations that demonstrate the race condition vulnerability.

Classification

Working Poc 95%

Attack Type

Auth Bypass

Complexity

Moderate

Reliability

Reliable

Target: Moodle 3.9 - 3.9.13, 3.10 - 3.10.10, 3.11 - 3.11.6

No auth needed

Prerequisites: Access to the Moodle login page · Ability to send concurrent HTTP requests

MITRE ATT&CK

T1110 - Brute Force

devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6

Core References

Vendor Advisory x_refsource_misc

https://moodle.org/mod/forum/discuss.php?d=434582

Issue Tracking, Third Party Advisory x_refsource_misc

https://bugzilla.redhat.com/show_bug.cgi?id=2083613

Patch, Vendor Advisory x_refsource_misc

http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-73736

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PIMSIRKCFLIC646K4GMUSZU7THOUVPAJ/

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGF35EN5K2R6X3NTY3XPZSJ3UDASMXI6/

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QCTWSE3JDMSYL7DPCMXMMJEXZSS6VIA5/

Scores

CVSS v3 9.8

EPSS 0.0488

EPSS Percentile 90.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-682

Status published

Products (7)

fedoraproject/fedora 34

fedoraproject/fedora 35

fedoraproject/fedora 36

moodle/moodle 4.0.0

moodle/moodle 3.9 - 3.9.14

moodle/moodle 4.0 - 4.0.1Packagist

redhat/enterprise_linux 8.0

Published May 18, 2022

Tracked Since Feb 18, 2026