CVE-2021-24147

Modern Events Calendar Lite < 5.16.5 - Authenticated Stored Cross-Site Scripting (XSS)

MEDIUM
5.4
CVSS Score
Published: March 18, 2021 at 02:57 PM UTC
Updated: June 17, 2026 at 03:39 AM UTC
1 product affected across 1 vendorModern Events Calendar Lite

Using Modern Events Calendar Lite by Unknown?

Get instant alerts when new vulnerabilities affect Modern Events Calendar Lite - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5.4
Exploit prediction
EPSS 0.7%

Description

Unvalidated input and lack of output encoding in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not sanitise the mic_comment field (Notes on time) when adding/editing an event, allowing users with privilege as low as author to add events with a Cross-Site Scripting payload in them, which will be triggered in the frontend when viewing the event.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.16.5
Affected range stops below 5.16.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card