CVE-2026-109573 PUBLISHED

phpMyFAQ before 4.1.9 SQL Injection via api/autocomplete Search Endpoint

Assigner: VulnCheck
Reserved: 12.10.2026 Published: 12.10.2026 Updated: 13.10.2026

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.

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	High	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.1

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	thorsten
Product	phpMyFAQ
Versions	Default: unaffected affected from 0 to 4.1.9 (excl.) Version 4.1.9 is unaffected affected from 4.2.0-alpha to 4.2.0-beta (excl.) Version 4.2.0-beta is unaffected

Credits

manus-pi reporter
manus-use reporter

References

Problem Types

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') CWE