WordPress Plugin Vulnerabilities

Greenshift < 5.0 - Contributor+ Stored XSS

Description

The plugin does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.

Proof of Concept

Exploit Additional CSS class(es) for "Advanced Heading" Gutenberg block:

" onmouseover="alert(1)" style="background:red;"

Affects Plugins

References

Classification

Type
XSS
CWE

Miscellaneous

Original Researcher
Lana Codes
Submitter
Lana Codes
Submitter website
Submitter twitter
Verified
Yes

Timeline

Publicly Published
2023-01-27 (about 1 years ago)
Added
2023-01-27 (about 1 years ago)
Last Updated
2023-01-27 (about 1 years ago)

Other