Modern Events Calendar Lite <= 5.16.4 - Authenticated Stored Cross-Site Scripting

2021-01-29 00:00

Nguyen Van Khanh

Strategic Overview

Status

Patched in 5.16.5

Affected PluginModern Events Calendar Lite

Affected Version<= 5.16.4

CVSS6.4Medium

CVECVE-2021-24147

View all Modern Events Calendar Lite vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 5.16.5, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24147 https://www.wordfence.com/threat-intel/vulnerabilities/id/b3aa7b27-a335-4f82-a50a-45becdd5ef4e

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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