CVE-2026-109573 phpMyFAQ before 4.1.9 SQL Injection via api/autocomplete Search Endpoint
Unauthenticated attackers can exploit SQL injection in the autocomplete endpoint to read secrets and modify data if the database uses NO_BACKSLASH_ESCAPES mode.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109573?
CVE-2026-109573 is a critical SQL injection vulnerability in thorsten phpMyFAQ, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-89
Which versions are affected by CVE-2026-109573?
How do I fix CVE-2026-109573?
No fix has been published for CVE-2026-109573 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-109573 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109573 exists.
Sources
Also known as GHSA-2v8j-hf72-c5w9, GHSA-98p2-cg7p-h385.