The Cryptocurrency Prijsvergelijking Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting in version 1.0. This is due to insufficient output escaping in the as_get_coin_shortcode() function, which renders the 'width' (and 'height') shortcode attribute directly into the style attribute of an <iframe> element without applying any escaping function such as esc_attr(). An attacker-controlled value like '100px;"onload="alert(1)" x="' terminates the style attribute prematurely and injects an arbitrary HTML attribute into the iframe tag. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
History

Wed, 27 May 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Cryptoprijzen
Cryptoprijzen cryptocurrency Prijsvergelijking Widget
Wordpress
Wordpress wordpress
Vendors & Products Cryptoprijzen
Cryptoprijzen cryptocurrency Prijsvergelijking Widget
Wordpress
Wordpress wordpress

Wed, 27 May 2026 06:30:00 +0000

Type Values Removed Values Added
Description The Cryptocurrency Prijsvergelijking Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting in version 1.0. This is due to insufficient output escaping in the as_get_coin_shortcode() function, which renders the 'width' (and 'height') shortcode attribute directly into the style attribute of an <iframe> element without applying any escaping function such as esc_attr(). An attacker-controlled value like '100px;"onload="alert(1)" x="' terminates the style attribute prematurely and injects an arbitrary HTML attribute into the iframe tag. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Title Cryptocurrency Prijsvergelijking Widget <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'width' Shortcode Attribute
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-05-27T10:40:15.946Z

Reserved: 2026-05-15T16:52:11.269Z

Link: CVE-2026-8698

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-27T07:16:14.177

Modified: 2026-05-27T07:16:14.177

Link: CVE-2026-8698

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T10:07:48Z