SupportCandy Plugin up to 3.4.4 on WordPress add_reply description_attachments resource injection

Summaryinfo

A vulnerability has been found in SupportCandy Plugin up to 3.4.4 on WordPress and classified as critical. The affected element is the function add_reply. This manipulation of the argument description_attachments causes resource injection. This vulnerability is handled as CVE-2026-1251. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in SupportCandy Plugin up to 3.4.4 on WordPress. It has been declared as critical. Affected by this vulnerability is the function add_reply. The manipulation of the argument description_attachments with an unknown input leads to a resource injection vulnerability. The CWE definition for the vulnerability is CWE-99. The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended sphere of control. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The SupportCandy – Helpdesk & Customer Support Ticket System plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.4.4 via the 'add_reply' function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to steal file attachments uploaded by other users by specifying arbitrary attachment IDs in the 'description_attachments' parameter, re-associating those files to their own tickets and removing access from the original owners.

It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-1251. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/01/2026).

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-5080). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• SupportCandy Plugin

Version

• 3.4.0
• 3.4.1
• 3.4.2
• 3.4.3
• 3.4.4

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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