CVE-2026-8698

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.

PUBLISHED Reserved 2026-05-15 | Published 2026-05-27 | Updated 2026-05-27 | Assigner Wordfence

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Timeline

Credits

nail majdeddine finder

References

www.wordfence.com/...-55c8-48b3-8aa6-ef299886061d?source=cve

plugins.trac.wordpress.org/...ing-widget/trunk/functions.php

plugins.trac.wordpress.org/...ing-widget/trunk/functions.php

cve.org (CVE-2026-8698)

nvd.nist.gov (CVE-2026-8698)

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