title: Inadequate access control vulnerability in Moodle
description: Inadequate access control in Moodle LMS. This vulnerability could allow a local user with a student role to create arbitrary events intended for users with higher roles. It could also allow the attacker to add events to the calendar of all users without their prior consent.
problem types: CWE-284 Improper Access Control
affected:
{
defaultStatus: unaffected
product: LMS
vendor: Moodle
versions:
lessThanOrEqual: 4.2, status: affected, version: 0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: HIGH
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: There is no reported solution at this time.