Comesio Relevanssi Plugin on WordPress Admin Search args sql injection

Summaryinfo

A vulnerability identified as critical has been detected in Comesio Relevanssi Plugin. Impacted is an unknown function of the component Admin Search. This manipulation of the argument args causes sql injection. This vulnerability is tracked as CVE-2026-15941. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Comesio Relevanssi Plugin (affected version not known). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component Admin Search. The manipulation of the argument args with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The plugin provides an Admin Search page that allows users with the `edit_posts` capability to run Relevanssi searches from the WordPress dashboard. The AJAX handler accepts a URL-encoded `args` parameter, parses it into a `WP_Query`, and then passes user-controlled taxonomy query data into Relevanssi's taxonomy restriction builder. The taxonomy value is sanitized as text but is not parameterized for SQL before being interpolated into a term taxonomy lookup query. This allows an authenticated contributor-level attacker to inject SQL through the Admin Search AJAX request and execute time-based blind SQL injection against the WordPress database.

The advisory is shared at wordfence.com. This vulnerability is known as CVE-2026-15941 since 07/16/2026. The exploitation appears to be easy. The attack can be launched remotely. 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 08/05/2026). MITRE ATT&CK project uses the attack technique T1505 for this issue.

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-2026-53058). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• Comesio

Name

• Relevanssi Plugin

CPE 2.3info

• 🔒

CPE 2.2info

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Entryinfo

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

Discussion