Light Messages <= 1.0 - Authenticated (Admin+) Cross-Site Scripting

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2021-24535
CVSS Medium (6.1)
Publicly Published July 19, 2021
Last Updated January 22, 2024
Researcher Vinay Bhuria
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.

References

1 affected software package

Software Type Plugin
Software Slug light-messages (view on wordpress.org)
Patched? No
Affected Version
  • <= 1.0
Patched Version
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