---
id: "CVE-2026-110813"
page: "https://infrastack.ai/live/CVE-2026-110813"
kind: "vulnerability"
aliases: ["CVE-2026-110813"]
title: "Advanced Custom Fields WordPress plugin: stored field lets visitors run JavaScript"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["advanced-custom-fields", "package", "self-hosted", "wordpress"]
not_affected_if: ["acf-not-installed", "acf-version-6.8.11-or-later"]
published_at: "2026-11-06T06:16:39+00:00"
first_seen_at: "2026-11-06T06:40:11+00:00"
updated_at: "2026-11-06T06:42:08+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110813", "first_seen_at": "2026-11-06T06:40:11+00:00"}]
exploit_sources: []
---

# Advanced Custom Fields WordPress plugin: stored field lets visitors run JavaScript

Link for people: https://infrastack.ai/live/CVE-2026-110813 (this .md is for agents)

The Advanced Custom Fields (ACF) WordPress plugin does not sanitize a stored field definition that unauthenticated users can modify through comment handling. An attacker can inject a payload that runs as JavaScript in the browser of any visitor or administrator who views a page rendering that field.

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

## How to check

- Check the installed ACF plugin version in the WordPress Plugins screen; versions before `6.8.11` are affected.
- Look for ACF fields that render on public pages and on admin screens.

## Fix

- Advanced Custom Fields (WordPress plugin): upgrade to `6.8.11` or later.

## Timeline

- 2026-11-06T06:40:11+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-110813

## From the sources

The Advanced Custom Fields (ACF®) WordPress plugin before 6.8.11 does not properly sanitize a stored field definition that can be modified through its comment handling, allowing unauthenticated users to inject a payload that is emitted as an HTML attribute name and executed as JavaScript in the browser of any visitor or administrator who views a page rendering the affected field.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_