CVE-2026-65508 WordPress Simply Schedule Appointments plugin <= 1.6.12.10 - SQL Injection vulnerability
Unauthenticated attackers can execute arbitrary SQL commands via the Simply Schedule Appointments plugin, potentially accessing or modifying database contents.
- 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-2026-65508?
CVE-2026-65508 is a critical SQL injection vulnerability in NSquared Simply Schedule Appointments, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Unauthenticated SQL Injection in Simply Schedule Appointments <= 1.6.12.10 versions.
Weakness: CWE-89
Which versions are affected by CVE-2026-65508?
How do I fix CVE-2026-65508?
No fix has been published for CVE-2026-65508 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-2026-65508 being exploited?
There is no known exploitation of CVE-2026-65508 in the wild and no public exploit code.
Sources
Also known as GHSA-8prr-j8xh-jjcw.