SQL Injection in Thorsten Phpmyfaq
CVE-2026-109573
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.
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/thorsten/phpMyFAQ/security/advisories/GHSA-98p2-cg7p-h385 (vendor-advisory)
- www.vulncheck.com/advisories/phpmyfaq-before-4.1.9-sql-injection-via-api-autoco… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109573?
- CVE-2026-109573 is a high-severity vulnerability in Thorsten Phpmyfaq, classified under SQL Injection. CVSS score: 8.1/10. Published 2026-10-12.
- How severe is CVE-2026-109573?
- High severity. CVSS v3 base score is 8.1 out of 10.