CVE-2021-24535 Information

Description

The Light Messages WordPress plugin through 1.0 is lacking CSRF check when updating it’s settings and is not sanitising its Message Content in them (even with the unfiltered_html disallowed). As a result an attacker could make a logged in admin update the settings to arbitrary values and set a Cross-Site Scripting payload in the Message Content. Depending on the options set the XSS payload can be triggered either in the backend only (in the plugin’s settings) or both frontend and backend.

CVSS Vector

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

Reference

https://wpscan.com/vulnerability/351de889-9c0a-4637-bd06-0e1fe1d7e89f

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

6.1