CVE-2026-4078
ITERAS <= 1.8.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
Description
The ITERAS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple shortcodes (iteras-ordering, iteras-signup, iteras-paywall-login, iteras-selfservice) in all versions up to and including 1.8.2. This is due to insufficient input sanitization and output escaping in the combine_attributes() function. The function directly concatenates shortcode attribute values into JavaScript code within <script> tags using double-quoted string interpolation (line 489: '"'.$key.'": "'.$value.'"') without any escaping. An attacker can break out of the JavaScript string context by including a double-quote character in a shortcode attribute value and inject arbitrary JavaScript. 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.
INFO
Published Date :
April 24, 2026, 8:16 a.m.
Last Modified :
April 24, 2026, 8:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-4078
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the ITERAS plugin to the latest version.
- Ensure all shortcode attributes are properly sanitized.
- Escape all user-supplied data before outputting.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-4078.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-4078 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-4078
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-4078 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-4078 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Apr. 24, 2026
Action Type Old Value New Value Added Description The ITERAS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple shortcodes (iteras-ordering, iteras-signup, iteras-paywall-login, iteras-selfservice) in all versions up to and including 1.8.2. This is due to insufficient input sanitization and output escaping in the combine_attributes() function. The function directly concatenates shortcode attribute values into JavaScript code within <script> tags using double-quoted string interpolation (line 489: '"'.$key.'": "'.$value.'"') without any escaping. An attacker can break out of the JavaScript string context by including a double-quote character in a shortcode attribute value and inject arbitrary JavaScript. 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L489 Added Reference https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L511 Added Reference https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L519 Added Reference https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L527 Added Reference https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L551 Added Reference https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L561 Added Reference https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L489 Added Reference https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L511 Added Reference https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L519 Added Reference https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L527 Added Reference https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L551 Added Reference https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L561 Added Reference https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3507724%40iteras&new=3507724%40iteras&sfp_email=&sfph_mail= Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/bd034f43-370c-4ad9-ad02-4cae0f48d781?source=cve