PT-2026-34866 · WordPress · Iteras

Published 2026-04-24 · Updated 2026-04-25 · CVE-2026-4078

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions ITERAS plugin for WordPress versions prior to 1.8.3

Description Stored Cross-Site Scripting is possible via multiple shortcodes: 'iteras-ordering', 'iteras-signup', 'iteras-paywall-login', and 'iteras-selfservice'. The issue stems from insufficient input sanitization and output escaping in the combine attributes() function, which concatenates shortcode attribute values into JavaScript code within <script> tags using double-quoted string interpolation. Authenticated attackers with Contributor-level access or higher can inject arbitrary JavaScript by including a double-quote character in a shortcode attribute value, allowing scripts to execute when a user visits the affected page.

Recommendations Update the plugin to a version later than 1.8.2. As a temporary workaround, restrict the use of the 'iteras-ordering', 'iteras-signup', 'iteras-paywall-login', and 'iteras-selfservice' shortcodes to trusted users only.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-4078

Affected Products

Iteras

References · 16

• https://nvd.nist.gov/vuln/detail/CVE-2026-4078 · Security Note
• https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L561 · Note
• https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L527 · Note
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3507724%40iteras&new=3507724%40iteras&sfp_email=&sfph_mail= · Note
• https://twitter.com/CVEnew/status/2048099304519217530 · Twitter Post
• https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L551 · Note
• https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L489 · Note
• https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L561 · Note
• https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L511 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/bd034f43-370c-4ad9-ad02-4cae0f48d781?source=cve · Note
• https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L527 · Note
• https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L519 · Note
• https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L511 · Note
• https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L551 · Note
• https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L489 · Note