CVE-2026-109573

critical · 9.2

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.

9.2

CVSS

0.3%

EPSS (exploit prob.)

27th

EPSS percentile

2026-10-12

Published

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-89

References

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-98p2-cg7p-h385
https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.9-sql-injection-via-api-autocomplete-search-endpoint
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-98p2-cg7p-h385

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-109573