CVE-2026-11912

Simple File List <= 6.3.7 - Missing Authorization to Unauthenticated File Modification via simplefilelist_edit_job AJAX Action

2026-06-19 20:27
Chloe Chamberland

Strategic Overview

Status
Patched in 6.3.8
Affected Plugin
Simple File List
Affected Version
<= 6.3.7
CVSS
7.5High
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-11912
View all Simple File List vulnerabilities

At a glance

CVE-2026-11912 is a high-severity Missing Authorization vulnerability in the Simple File List WordPress plugin, affecting versions <= 6.3.7. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 6.3.8; sites on affected versions should update now. Disclosed June 2026, reported by Chloe Chamberland.

Vulnerability Overview

The Simple File List plugin for WordPress is vulnerable to arbitrary file modification due to insufficient authorization checks in all versions up to, and including, 6.3.7. This makes it possible for unauthenticated attackers to delete and modify files on the serve. This vulnerability is exploitable even when the administrator has not enabled the AllowFrontManage setting, because the is_admin() check unconditionally short-circuits the guard before that setting is evaluated.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on integrity.

CWE-862: Missing Authorization

Simple File List <= 6.3.7 carries this weakness at is_admin(), and reaching it takes no account at all. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Simple File List the fix is 6.3.8: builds <= 6.3.7 are affected, anything from 6.3.8 onward is not.

Remediation

Update to version 6.3.8, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Simple File List 6.3.8 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-11912https://www.wordfence.com/threat-intel/vulnerabilities/id/509a40d2-a33a-49ba-b858-fa8805127a1bhttps://nvd.nist.gov/vuln/detail/CVE-2026-11912

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C