CVE-2026-77263

high

Description

The iubenda | All-in-one Compliance for GDPR / CCPA Cookie Consent + more plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 3.13.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit works by embedding KSES-allowed markup such as abbr title attributes and HTML comments in a submitted comment so that the global strtr() substitution strips substrings from an inert tag, mutating it into an executable element such as an img onerror handler that runs in the WordPress origin for any visitor, including logged-in administrators.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/f8d18aaa-c8f4-4688-841d-2a77b71b60b0?source=cve

https://plugins.trac.wordpress.org/changeset?reponame=&new=3675630%40iubenda-cookie-law-solution%2Ftags%2F3.13.5&old=3663183%40iubenda-cookie-law-solution%2Ftags%2F3.13.4

https://plugins.trac.wordpress.org/changeset?old_path=%2Fiubenda-cookie-law-solution/tags/3.13.4&new_path=%2Fiubenda-cookie-law-solution/tags/3.13.5

https://plugins.trac.wordpress.org/changeset/3675630/iubenda-cookie-law-solution/trunk/iubenda-cookie-class/iubenda.class.php

https://plugins.trac.wordpress.org/browser/iubenda-cookie-law-solution/trunk/iubenda_cookie_solution.php#L857

https://plugins.trac.wordpress.org/browser/iubenda-cookie-law-solution/trunk/iubenda_cookie_solution.php#L834

https://plugins.trac.wordpress.org/browser/iubenda-cookie-law-solution/trunk/iubenda-cookie-class/iubenda.class.php#L941

https://plugins.trac.wordpress.org/browser/iubenda-cookie-law-solution/trunk/iubenda-cookie-class/iubenda.class.php#L381

Details

Source: Mitre, NVD

Published: 2026-09-05

Updated: 2026-09-08

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 7.2

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Severity: High

EPSS

EPSS: 0.00247