alexvtn Custom Thank You Page for WooCommerce Plugin up to 1.1.2 on WordPress save_option improper authorization

Summaryinfo

A vulnerability was found in alexvtn Custom Thank You Page for WooCommerce Plugin up to 1.1.2. It has been classified as critical. Impacted is the function save_option. The manipulation leads to improper authorization. This vulnerability is uniquely identified as CVE-2026-4806. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in alexvtn Custom Thank You Page for WooCommerce Plugin up to 1.1.2. It has been rated as critical. This issue affects the function save_option. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The Custom Thank You Page for WooCommerce plugin for WordPress is vulnerable to unauthorized access and loss of data due to a missing capability check on the save_option() function in all versions up to, and including, 1.1.2. This makes it possible for unauthenticated attackers to to export or reset(delete) the plugin's settings.

The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-4806 since 03/25/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/24/2026). MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• alexvtn

Name

• Custom Thank You Page for WooCommerce Plugin

Version

• 1.1.0
• 1.1.1
• 1.1.2

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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