PT-2026-43500 · Cryptoprijzen · Cryptocurrency Prijsvergelijking Widget

Nail Majdeddine · Published 2026-05-27 · Updated 2026-05-27 · CVE-2026-8698

NVD

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

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 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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-8698

Affected Products

Cryptocurrency Prijsvergelijking Widget

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-8698 · Security Note
• https://plugins.trac.wordpress.org/browser/cryptocurrency-prijsvergelijking-widget/trunk/functions.php#L157 · Note
• https://plugins.trac.wordpress.org/browser/cryptocurrency-prijsvergelijking-widget/trunk/functions.php#L138 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/058e47cd-55c8-48b3-8aa6-ef299886061d?source=cve · Note