Executive Summary

The WordPress InPost Gallery Plugin, versions 2.1.4.6 and below, contains a critical SQL Injection vulnerability (CVE-2026-39574). This flaw allows unauthenticated attackers to directly interact with the website's database.

Because the attacker does not need to be logged in, they can exploit this vulnerability remotely without any prior access.

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Compliance Impact

The vulnerability allows unauthenticated attackers to perform SQL Injection attacks, potentially stealing sensitive information from the website's database.

Such unauthorized access and data theft can lead to violations of data protection regulations and standards like GDPR and HIPAA, which require safeguarding personal and sensitive data against unauthorized access.

Therefore, if exploited, this vulnerability could result in non-compliance with these regulations due to the exposure of sensitive information.

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Impact Analysis

This vulnerability can have severe impacts including unauthorized access to sensitive information stored in the website's database.

It can lead to data theft and compromise the integrity and availability of the affected website.

The vulnerability is actively targeted in mass-exploit campaigns, increasing the risk of widespread attacks.

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Detection Guidance

The vulnerability is an unauthenticated SQL Injection in the WordPress InPost Gallery Plugin versions 2.1.4.6 and below. Detection typically involves monitoring for suspicious SQL injection attempts targeting the plugin's endpoints.

While specific commands are not provided in the available resources, common detection methods include using web application firewalls (WAFs) with rules to detect SQL injection patterns, analyzing web server logs for unusual query strings or payloads, and employing vulnerability scanners that support WordPress plugins.

Patchstack offers an automatic mitigation rule to block attacks until the plugin is updated, which can also help in detecting exploitation attempts.

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Mitigation Strategies

The immediate and recommended step to mitigate this vulnerability is to update the WordPress InPost Gallery Plugin to version 2.1.5 or later, where the issue is patched.

Until the update can be applied, users are advised to implement the automatic mitigation rule provided by Patchstack to block attacks targeting this SQL injection vulnerability.

Additionally, seeking assistance from your hosting provider or developer to apply these mitigations and monitor for exploitation attempts is recommended.

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