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CVE-2026-17509— WPML Multilingual CMS <= 4.9.5 - Incorrect Authorization to Authenticated (Subscriber+) SQL Injection via ‘elementIds’

Quick assessment

Affected
WPML WPML Multilingual CMS
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.

WPML Multilingual CMS是WPML组织的一款帮助网站创建和管理多语言内容的CMS插件。 WPML Multilingual CMS 4.9.5及之前版本存在SQL注入漏洞，该漏洞源于对用户提供的elementIds参数转义不足且对现有SQL查询准备不充分，可能导致经过身份验证的攻击者利用授权绕过向现有查询追加额外SQL查询，提取数据库中的敏感信息。

CVSS 6.5 · Medium EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
WPML WPML Multilingual CMS ≤ 4.9.5 affected
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I. Basic Information for CVE-2026-17509

Vulnerability Information
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Vulnerability Title
WPML Multilingual CMS <= 4.9.5 - Incorrect Authorization to Authenticated (Subscriber+) SQL Injection via ‘elementIds’
Source: CVE Program / CVE List V5
Vulnerability Description
The WPML Multilingual CMS plugin for WordPress is vulnerable to time-based SQL Injection via the ‘elementIds’ parameter in all versions up to, and including, 4.9.5 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. This vulnerability is exploitable due to an authorization bypass where the registered authorization callback fails to execute, allowing any authenticated user regardless of role to access administrative translation functionalities.
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
WPML Multilingual CMS SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WPML Multilingual CMS是WPML组织的一款帮助网站创建和管理多语言内容的CMS插件。 WPML Multilingual CMS 4.9.5及之前版本存在SQL注入漏洞，该漏洞源于对用户提供的elementIds参数转义不足且对现有SQL查询准备不充分，可能导致经过身份验证的攻击者利用授权绕过向现有查询追加额外SQL查询，提取数据库中的敏感信息。
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
WPML WPML Multilingual CMS 0 ~ 4.9.5 -

II. Public POCs for CVE-2026-17509

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III. Intelligence Information for CVE-2026-17509

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Vendor Advisories for CVE-2026-17509 (1)

Vendor Pages for CVE-2026-17509 (1)

IV. Related Vulnerabilities

Same product: WPML Multilingual CMS
Same vendor: WPML
Same weakness: CWE-89