Description
The ACF Flexible Layouts Manager plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'acf_flm_update_template_with_pasted_layout' function in all versions up to, and including, 1.1.6. This makes it possible for unauthenticated attackers to update custom field values on individual posts and pages.
Published: 2025-11-18
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized Modification of Content
Action: Apply Patch
AI Analysis

Impact

The ACF Flexible Layouts Manager plugin for WordPress contains a missing capability check that allows attackers who are not logged in to modify custom field values on individual posts and pages. This flaw permits unauthorized data alteration, directly compromising the integrity of website content.

Affected Systems

WordPress sites using the ACF Flexible Layouts Manager plugin version 1.1.6 or earlier are affected, regardless of theme or other plugins. Any instance of the plugin that has not been updated to a later release is vulnerable.

Risk and Exploitability

The CVSS score of 6.5 indicates the vulnerability is medium severity. The EPSS score of less than 1% suggests a low likelihood of widespread exploitation. The vulnerability is not currently listed in the CISA KEV catalog. Based on the description, the likely attack vector is an unauthenticated remote user accessing the AJAX endpoint that triggers the missing authorization check, enabling the attacker to send crafted requests that alter post or page data.

Generated by OpenCVE AI on April 21, 2026 at 18:16 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the ACF Flexible Layouts Manager plugin to version 1.1.7 or newer to resolve the missing authorization check.
  • If an upgrade is not immediately possible, limit the AJAX endpoint to authenticated users by adding a capability check or by restricting the endpoint via .htaccess or a security plugin.
  • Monitor the site’s logs for unexpected custom field update activity and review content for unauthorized changes.

Generated by OpenCVE AI on April 21, 2026 at 18:16 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 18 Nov 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 18 Nov 2025 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Wordpress
Wordpress wordpress
Vendors & Products Wordpress
Wordpress wordpress

Tue, 18 Nov 2025 08:45:00 +0000

Type Values Removed Values Added
Description The ACF Flexible Layouts Manager plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'acf_flm_update_template_with_pasted_layout' function in all versions up to, and including, 1.1.6. This makes it possible for unauthenticated attackers to update custom field values on individual posts and pages.
Title ACF Flexible Layouts Manager <= 1.1.6 - Missing Authorization to Unauthenticated Custom Field Update
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Subscriptions

Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-04-08T17:09:13.734Z

Reserved: 2025-11-10T02:53:58.874Z

Link: CVE-2025-12937

cve-icon Vulnrichment

Updated: 2025-11-18T14:26:14.087Z

cve-icon NVD

Status : Deferred

Published: 2025-11-18T09:15:49.470

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-12937

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-21T18:30:27Z

Weaknesses