WordPress Plugin Vulnerabilities

WP Spell Check < 9.13 - Admin+ Stored Cross-Site Scripting

Description

The plugin does not escape ignored words, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

Proof of Concept

Add a word to ignore (via /wp-admin/admin.php?page=wp-spellcheck-ignore.php) with the following payload: " style=animation-name:rotation onanimationstart=alert(/XSS/)// 

The XSS will be trigged each time the ignore dashboard is accessed

Affects Plugins

Fixed in 9.13

References

Classification

Type
XSS
CWE
CVSS

Miscellaneous

Original Researcher
Marco Nappi
Submitter
Marco Nappi
Submitter twitter
Verified
Yes

Timeline

Publicly Published
2022-12-23 (about 1 years ago)
Added
2022-12-26 (about 1 years ago)
Last Updated
2022-12-26 (about 1 years ago)

Other