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CVE-2026-15941— Relevanssi <= 4.27.1 and Relevanssi Premium <= 2.30.2 - Authenticated (Contributor+) SQL Injection

Quick assessment

Affected
Relevanssi Relevanssi Premium – A Better Search
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Relevanssi是WordPress基金会开源的一款优化站内搜索体验的CMS插件。 WordPress Relevanssi 4.27.1及之前版本存在SQL注入漏洞，该漏洞源于AJAX处理程序对args参数处理不当，用户控制的分类查询数据在插入SQL查询前未进行参数化处理，可能导致经过身份验证的贡献者级攻击者执行基于时间的盲SQL注入。

CVSS 6.5 · Medium EPSS 0.41% · P33

Affected Version Matrix 2

VendorProduct Version RangeStatus
comesio Relevanssi – A Better Search ≤ 4.27.1 affected
Relevanssi Relevanssi Premium – A Better Search ≤ 2.30.2 affected
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I. Basic Information for CVE-2026-15941

Vulnerability Information
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Vulnerability Title
Relevanssi <= 4.27.1 and Relevanssi Premium <= 2.30.2 - Authenticated (Contributor+) SQL Injection
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Relevanssi SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Relevanssi是WordPress基金会开源的一款优化站内搜索体验的CMS插件。 WordPress Relevanssi 4.27.1及之前版本存在SQL注入漏洞，该漏洞源于AJAX处理程序对args参数处理不当，用户控制的分类查询数据在插入SQL查询前未进行参数化处理，可能导致经过身份验证的贡献者级攻击者执行基于时间的盲SQL注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Relevanssi Relevanssi Premium – A Better Search 0 ~ 2.30.2 -
comesio Relevanssi – A Better Search 0 ~ 4.27.1 -

II. Public POCs for CVE-2026-15941

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III. Intelligence Information for CVE-2026-15941

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Patches & Fixes for CVE-2026-15941 (2)

Vendor Advisories for CVE-2026-15941 (1)

IV. Related Vulnerabilities

Same vendor: Relevanssi
Same weakness: CWE-89

V. Comments for CVE-2026-15941

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