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CVE-2026-109573— phpMyFAQ before 4.1.9 SQL Injection via api/autocomplete Search Endpoint

Quick assessment

Affected
thorsten phpMyFAQ
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.

phpMyFAQ 4.1.9 之前的版本存在一个 SQL 注入漏洞，位于 方法中。该方法使用反斜杠对单引号进行转义，但在 MySQL 或 MariaDB 启用 模式时，反斜杠会被当作普通字符处理，而非转义符。未认证的攻击者可以通过向 接口的搜索参数发送 Unicode 右单引号（该字符会被规范化为 ASCII 单引号），利用此漏洞读取凭据和配置机密信息、修改数据记录，或删除数据库表。

CVSS 8.1 · High EPSS 0.26% · P17

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
thorsten phpMyFAQ < 4.1.9 affected
4.1.9 unaffected
4.2.0-alpha< 4.2.0-beta affected
4.2.0-beta unaffected
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I. Basic Information for CVE-2026-109573

Vulnerability Information
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Vulnerability Title
phpMyFAQ before 4.1.9 SQL Injection via api/autocomplete Search Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
phpMyFAQ before 4.1.9 contains an SQL injection vulnerability in PdoMysql::escape(), which escapes single quotes with backslashes that are treated literally when MySQL or MariaDB runs in NO_BACKSLASH_ESCAPES mode. Unauthenticated attackers can send a Unicode right single quotation mark in the search parameter of api/autocomplete, which is normalized to an ASCII quote, to read credentials and configuration secrets, modify records, or drop tables.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
thorsten phpMyFAQ 0 ~ 4.1.9 -

II. Public POCs for CVE-2026-109573

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III. Intelligence Information for CVE-2026-109573

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Vendor Advisories for CVE-2026-109573 (2)

IV. Related Vulnerabilities

Same product: phpMyFAQ
Same vendor: thorsten
Same weakness: CWE-89

V. Comments for CVE-2026-109573

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