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Vulnerabilities and Security Researches

Vulnerabilities and security researches forrelevanssi relevanssi

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Oct 26, 2026

Relevanssi – A Better Search # CVE-2026-114704

CVE, Research URL

CVE-2026-114704

Date
Oct 24, 2026
Research Description
Deserialization of Untrusted Data vulnerability in Christoph Vielgrader Relevanssi relevanssi allows Object Injection.This issue affects Relevanssi : from n/a through 4.28.4.
Affected versions
max 4.28.5.
Status
vulnerable
Oct 05, 2026

Relevanssi – A Better Search # CVE-2026-97641

CVE, Research URL

CVE-2026-97641

Date
Oct 02, 2026
Research Description
The Relevanssi – A Better Search plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 4.28.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when the administrator has configured a non-empty value for the "Allowable tags in excerpts" setting, such as the default example value of <p><a><strong>, as the prefix-matching regex must have an allowable tag whose name is a prefix of the injected tag name.
Affected versions
max 4.28.4.
Status
vulnerable
Sep 12, 2026

Relevanssi – A Better Search # CVE-2026-19985

CVE, Research URL

CVE-2026-19985

Date
Sep 11, 2026
Research Description
The Relevanssi – A Better Search plugin for WordPress is vulnerable to Reflected Cross-Site Scripting in versions up to, and including, 4.28.1 via the 's', 'post_types', and 'orderby' request parameters. This is due to insufficient input sanitization and output escaping in the relevanssi_debug_array() function in lib/debug.php, which dumps user-supplied query variables through print_r() inside a <pre> block without HTML escaping. The debug path is enabled by supplying the relevanssi_debug=on request parameter when the administrator has previously enabled the 'Debugging mode' setting; the gate itself is a configuration check with no capability, nonce, or logged-in check (the vendor explicitly suppresses nonce verification on that line). This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a specially crafted link.
Affected versions
max 4.28.2.
Status
vulnerable
Aug 06, 2026

Relevanssi &#8211; A Better Search # CVE-2026-15941

CVE, Research URL

CVE-2026-15941

Date
Aug 05, 2026
Research Description
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.
Affected versions
max 4.27.2.
Status
vulnerable
Jun 16, 2026

Relevanssi &#8211; A Better Search # 9ca33785bb0628030ed75b2ba3f6308cb414be9d

Date
Feb 25, 2014
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 3.3.1 Relevanssi <= 3.3 - SQL Injection The Relevanssi plugin for WordPress is vulnerable to SQL Injection via the ‘category_name’ parameter in versions up to, and including, 3.3 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Affected versions
max 3.3.1.
Status
vulnerable

Relevanssi &#8211; A Better Search # c0c27674-715e-464d-ab38-0774128e6741

Date
-
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 4.14.6 Relevanssi - Subscriber+ Unauthorised AJAX Calls The plugins do not have authorisation and CSRF checks in some of their AJAX actions, allowing any authenticated users, such as subscriber, to call them. This could disclose information to subscribers, as well as allow them to truncate the index, which will disable the search
Affected versions
max 4.14.6.
Status
vulnerable

Relevanssi &#8211; A Better Search # c9f5e1b2369a93bc990d545aff97629a10b54712

Date
Feb 15, 2022
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 4.14.6 Relevanssi – A Better Search < 4.14.6 & Relevanssi – A Better Search Pro < 2.16.5 - Missing Authorization The Relevanssi – A Better Search plugin for WordPress is vulnerable to authorization bypass due to missing capability checks on several functions in versions before 4.14.6 in the free version and 2.16.5 in the PRO version. This makes it possible for authenticated attackers with Subscriber-level roles and above to perform unauthorized AJAX actions.
Affected versions
max 4.14.6.
Status
vulnerable

Relevanssi &#8211; A Better Search # 7cc11925a2930251c4369580d9374702abc4b8e9

Date
Oct 19, 2021
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 4.14.4 Relevanssi - A Better Search Free & Premium <= 2.16.3 & 4.14.3 - Stored Cross-Site Scripting The Relevanssi - A Better Search Free & Premium plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘$query_link ’ parameter in versions up to, and including, 2.16.3 & 4.14.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected versions
max 4.14.4.
Status
vulnerable

Relevanssi &#8211; A Better Search # 7bfa7991667663a75517e65650f2fcd4e823aaea

Date
Oct 19, 2021
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 4.14.3 WordPress Relevanssi plugin <= 4.14.2 - Unauthenticated Stored Cross-Site Scripting (XSS) vulnerability Unauthenticated Stored Cross-Site Scripting (XSS) vulnerability discovered in WordPress Relevanssi plugin (versions <= 4.14.2).
Affected versions
max 4.14.3.
Status
vulnerable

Relevanssi &#8211; A Better Search # df21da3493d505c0d60078b5df61ea0d06c877c0

Date
Feb 24, 2011
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 2.7.3 WordPress Relevanssi Plugin 2.7.2- Stored XSS Relevanssi plugin is prone to a stored cross-site scripting vulnerability that exists because of "search Query" variable is displayed and logged unsanitized in the "User Searches" section in the admin Dashboard. This vulnerability allows an attacker to inject malicious HTML code.
Affected versions
max 2.7.3.
Status
vulnerable

Relevanssi &#8211; A Better Search # ecad5442ac171e61d727b8da522a107a38255289

Date
May 15, 2015
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 3.3 WordPress Relevanssi Plugin <= 3.2 - SQL Injection Because of this vulnerability, remote authenticated users can execute arbitrary SQL commands. Update the plugin.
Affected versions
max 3.3.
Status
vulnerable

Relevanssi &#8211; A Better Search # 54bed89c3662291f27ed3be9c9ceaf08299ac168

Date
Mar 04, 2014
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 3.4 WordPress Relevanssi Plugin - SQL Injection Relevanssi plugin is prone to an SQL injection. This vulnerability allows an attacker to modify data, compromise the access and application or exploit hidden vulnerabilities in the underlying database. Update the plugin.
Affected versions
max 3.4.
Status
vulnerable

Relevanssi &#8211; A Better Search # a3cd21694e8358309f561ae40c7fe677b58a4501

Date
Feb 15, 2022
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 4.14.6 WordPress Relevanssi – A Better Search plugin <= 4.14.5 - Unauthorized AJAX Calls vulnerability Unauthorized AJAX Calls vulnerability discovered by Jan w Oleju in WordPress Relevanssi – A Better Search plugin (versions <= 4.14.5).
Affected versions
max 4.14.6.
Status
vulnerable

Relevanssi &#8211; A Better Search # 8829d03c0347f2b086f6a549f57d6637abb356d7

Date
Apr 10, 2018
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 3.6.1 Relevanssi <= 3.6.0 - Authenticated (Admin+) SQL Injection The Relevanssi plugin for WordPress is vulnerable to generic SQL Injection via the ‘relevanssi_weight_’ parameter in versions up to, and including, 3.6.0 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 administrative privileges to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Affected versions
max 3.6.1.
Status
vulnerable

Relevanssi &#8211; A Better Search # a80953be-7032-412e-ba8c-33c04e16ba34

Date
-
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 3.3 Relevanssi 3.2 - Unspecified SQL Injection The Relevanssi &ndash; A Better Search WordPress plugin was affected by an Unspecified SQL Injection security vulnerability.
Affected versions
max 3.3.
Status
vulnerable

Relevanssi &#8211; A Better Search # ad08bd11-e4b0-4bb1-9481-3c9651f50466

Date
-
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 4.14.3 Relevanssi - A Better Search &lt; 4.14.3 - Unauthenticated Stored Cross-Site Scripting The plugin does not sanitise and escape user searches before outputting them in the related admin dashboard when the feature is enabled
Affected versions
max 4.14.3.
Status
vulnerable

Relevanssi &#8211; A Better Search # 04c725bb-7972-479f-88da-44b2d91f6698

Date
-
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 3.6.1 Relevanssi &lt;= 3.6.0 - Authenticated Admin SQL Injection The Relevanssi &ndash; A Better Search WordPress plugin was affected by an Authenticated Admin SQL Injection security vulnerability.
Affected versions
max 3.6.1.
Status
vulnerable

Relevanssi &#8211; A Better Search # b072ba14-b3d8-45c9-9375-1e66066ed398

Date
-
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 2.7.3 Relevanssi 2.7.2 - Stored XSS The Relevanssi &ndash; A Better Search WordPress plugin was affected by a Stored XSS security vulnerability.
Affected versions
max 2.7.3.
Status
vulnerable

Relevanssi &#8211; A Better Search # 50480344516a6faeef3c18ba92facd77a54898f1

Date
-
Research Description
Relevanssi &#8211; A Better Search [relevanssi] < 4.22 WordPress Relevanssi Plugin < 4.22 is vulnerable to Sensitive Data Exposure Update the WordPress Relevanssi plugin to the latest available version (at least 4.22). An unknown person discovered and reported this Sensitive Data Exposure vulnerability in WordPress Relevanssi Plugin. This vulnerability has been fixed in version 4.22. Have additional information or questions about this entry? Get in touch.
Affected versions
max 4.22.
Status
vulnerable
Jan 27, 2026

Relevanssi &#8211; A Better Search # CVE-2025-14719

CVE, Research URL

CVE-2025-14719

Date
Jan 07, 2026
Research Description
The Relevanssi WordPress plugin before 4.26.0, Relevanssi Premium WordPress plugin before 2.29.0 do not sanitize and escape a parameter before using it in a SQL statement, allowing contributor and above roles to perform SQL injection attacks
Affected versions
max 4.26.0.
Status
vulnerable
Jun 02, 2025

Relevanssi &#8211; A Better Search # CVE-2025-5016

CVE, Research URL

CVE-2025-5016

Date
May 31, 2025
Research Description
The Relevanssi – A Better Search plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Excerpt Highlights in all versions up to, and including, 4.24.5 (Free) and 2.27.6 (Premium) due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected versions
max 4.24.6.
Status
vulnerable
May 13, 2025

Relevanssi &#8211; A Better Search # CVE-2025-4396

CVE, Research URL

CVE-2025-4396

Date
May 13, 2025
Research Description
The Relevanssi – A Better Search plugin for WordPress is vulnerable to time-based SQL Injection via the cats and tags query parameters in all versions up to, and including, 4.24.4 (Free) and <= 2.27.5 (Premium) due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries to already existing queries that can be used to extract sensitive information from the database.
Affected versions
max 4.24.5.
Status
vulnerable
May 07, 2025

Relevanssi &#8211; A Better Search # CVE-2025-4054

CVE, Research URL

CVE-2025-4054

Date
May 07, 2025
Research Description
The Relevanssi – A Better Search plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the highlights functionality in all versions up to, and including, 4.24.3 (Free) and <= 2.27.4 (Premium), due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page via the search results.
Affected versions
max 4.24.4.
Status
vulnerable
Oct 10, 2024

Relevanssi &#8211; A Better Search # CVE-2024-9021

CVE, Research URL

CVE-2024-9021

Date
Oct 08, 2024
Research Description
In the process of testing the Relevanssi WordPress plugin before 4.23.1, a vulnerability was found that allows you to implement Stored XSS on behalf of the Contributor+ by embedding malicious script, which entails account takeover backdoor
Affected versions
max 4.23.1.
Status
vulnerable
Aug 16, 2024

Relevanssi &#8211; A Better Search # CVE-2024-7630

CVE, Research URL

CVE-2024-7630

Date
Aug 16, 2024
Research Description
The Relevanssi – A Better Search plugin for WordPress is vulnerable to Information Exposure in all versions up to, and including, 4.22.2 (Free) and 2.25.1 (Premium) via the relevanssi_do_query() due to insufficient limitations on the posts that are returned when searching. This makes it possible for unauthenticated attackers to extract potentially sensitive information from password protected posts.
Affected versions
max 4.23.0.
Status
vulnerable
Jun 07, 2024

Relevanssi &#8211; A Better Search # CVE-2014-9443

CVE, Research URL

CVE-2014-9443

Date
Jan 03, 2015
Research Description
Cross-site scripting (XSS) vulnerability in the Relevanssi plugin before 3.3.8 for WordPress allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
Affected versions
max 3.3.8.
Status
vulnerable

Relevanssi &#8211; A Better Search # CVE-2018-9034

CVE, Research URL

CVE-2018-9034

Date
Apr 05, 2018
Research Description
Cross-site scripting (XSS) vulnerability in lib/interface.php of the Relevanssi plugin 4.0.4 for WordPress allows remote attackers to inject arbitrary JavaScript or HTML via the tab GET parameter.
Affected versions
max 4.0.5.
Status
vulnerable

Relevanssi &#8211; A Better Search # CVE-2017-1000038

CVE, Research URL

CVE-2017-1000038

Date
Jul 17, 2017
Research Description
WordPress plugin Relevanssi version 3.5.7.1 is vulnerable to stored XSS resulting in attacker being able to execute JavaScript on the affected site
Affected versions
max 3.5.8.
Status
vulnerable

Relevanssi &#8211; A Better Search # CVE-2023-7199

CVE, Research URL

CVE-2023-7199

Date
Jan 29, 2024
Research Description
The Relevanssi WordPress plugin before 4.22.0, Relevanssi Premium WordPress plugin before 2.25.0 allows any unauthenticated user to read draft and private posts via a crafted request
Affected versions
max 4.22.0.
Status
vulnerable

Relevanssi &#8211; A Better Search # CVE-2024-3213

CVE, Research URL

CVE-2024-3213

Date
Apr 10, 2024
Research Description
The Relevanssi – A Better Search plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the relevanssi_update_counts() function in all versions up to, and including, 4.22.1. This makes it possible for unauthenticated attackers to execute expensive queries on the application that could lead into DOS.
Affected versions
max 4.22.2.
Status
vulnerable

Relevanssi &#8211; A Better Search # CVE-2024-1380

CVE, Research URL

CVE-2024-1380

Date
Mar 13, 2024
Research Description
The Relevanssi – A Better Search plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the relevanssi_export_log_check() function in all versions up to, and including, 4.22.0 (Free) and 2.25.0 (Premium). This makes it possible for unauthenticated attackers to export the query log data. The vendor has indicated that they may look into adding a capability check for proper authorization control, however, this vulnerability is theoretically patched as is.
Affected versions
max 4.22.1.
Status
vulnerable

Relevanssi &#8211; A Better Search # CVE-2024-3214

CVE, Research URL

CVE-2024-3214

Date
Apr 10, 2024
Research Description
The Relevanssi – A Better Search plugin for WordPress is vulnerable to CSV Injection in all versions up to, and including, 4.22.1. This makes it possible for unauthenticated attackers to embed untrusted input into exported CSV files, which can result in code execution when these files are downloaded and opened on a local system with a vulnerable configuration.
Affected versions
max 4.22.2.
Status
vulnerable