---
id: "CVE-2026-119160"
kind: "vulnerability"
aliases: ["CVE-2026-119160"]
title: "WordPress Smart Post plugin: stored cross-site scripting via display_name parameter"
severity: "medium"
cvss: 6.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "self-hosted", "smart-post", "wordpress"]
not_affected_if: ["auth-required", "no-author-filter-block", "plugin-not-installed"]
published_at: "2026-10-31T09:16:33+00:00"
first_seen_at: "2026-10-31T09:34:41+00:00"
updated_at: "2026-10-31T09:35:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119160", "first_seen_at": "2026-10-31T09:34:41+00:00"}]
---

# WordPress Smart Post plugin: stored cross-site scripting via display_name parameter

The Smart Post Gutenberg blocks plugin for WordPress does not sanitize the display_name parameter, letting a subscriber-level user store scripts. When a visitor clicks the attacker's entry in an Author Filter dropdown on a page with those blocks, the script runs in their browser.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether the Smart Post plugin (Post Grid, Post Carousel, Post Slider blocks) is installed and its version, in the WordPress admin under Plugins.
- Look for pages that use an Author Filter block alongside a grid or live-filter block.

## Fix

- Smart Post plugin: versions up to and including `4.0.9` are affected; the sources do not state a fixed version.

## Timeline

- 2026-10-31T09:34:41+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119160

## From the sources

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.

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