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WordPress Plugin Vulnerabilities

Remove Footer Credit < 1.0.11 - Admin+ Stored Cross-Site Scripting

Description

The plugin does properly sanitise its settings, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed.

Proof of Concept

In the plugin's settings, put the following values:

- In "Step 1: Enter text/HTML to remove (one per line)" field: powered
- In "Step 2: Enter your own footer credit (one per line)": ">--><img src onerror=alert(/XSS/)>

The XSS will be triggered in all pages 

Affects Plugins

remove-footer-credit
Fixed in version 1.0.11

References

CVE
CVE-2021-25050
URL
https://plugins.trac.wordpress.org/changeset/2655918

Classification

Type

XSS

OWASP top 10
A7: Cross-Site Scripting (XSS)
CWE
CWE-79

Miscellaneous

Original Researcher

apple502j

Submitter

apple502j

Verified

Yes

WPVDB ID
25a28adb-794f-4bdb-89e8-060296b45b38

Timeline

Publicly Published

2022-01-12 (about 1 years ago)

Added

2022-01-11 (about 1 years ago)

Last Updated

2022-04-12 (about 9 months ago)

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