samperrow Pre Party Resource Hints Plugin up to 1.8.20 on WordPress AJAX Action hint_ids sql injection

Summaryinfo

A vulnerability classified as critical has been found in samperrow Pre Party Resource Hints Plugin up to 1.8.20 on WordPress. This affects an unknown function of the component AJAX Action Handler. Performing a manipulation of the argument hint_ids results in sql injection. This vulnerability is cataloged as CVE-2026-4087. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in samperrow Pre Party Resource Hints Plugin up to 1.8.20 on WordPress. It has been classified as critical. This affects some unknown processing of the component AJAX Action Handler. The manipulation of the argument hint_ids with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Pre* Party Resource Hints plugin for WordPress is vulnerable to SQL Injection via the 'hint_ids' parameter of the pprh_update_hints AJAX action in all versions up to, and including, 1.8.20. This is due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with Subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

The weakness was shared by Chawabhon Netisingha. It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2026-4087 since 03/12/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

Upgrading to version 1.8.20 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-14180). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• samperrow

Name

• Pre Party Resource Hints Plugin

Version

• 1.8.0
• 1.8.1
• 1.8.2
• 1.8.3
• 1.8.4
• 1.8.5
• 1.8.6
• 1.8.7
• 1.8.8
• 1.8.9
• 1.8.10
• 1.8.11
• 1.8.12
• 1.8.13
• 1.8.14
• 1.8.15
• 1.8.16
• 1.8.17
• 1.8.18
• 1.8.19
• 1.8.20

CPE 2.3info

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• 🔒
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CPE 2.2info

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Entryinfo

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

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