CVE-2026-65508
Unauthenticated SQL injection in Simply Schedule Appointments WordPress plugin.
Is CVE-2026-65508 being exploited?
Not confirmed. CVE-2026-65508 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.28% probability of exploitation in the next 30 days.
How severe is CVE-2026-65508?
CVE-2026-65508 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-65508?
Yes. A fix has been recorded for CVE-2026-65508. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-65508 affect?
CVE-2026-65508 affects Simply Schedule Appointments <= 1.6.12.10, WordPress sites using the plugin. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-65508?
Update plugin to fixed version immediate or remove plugin; audit logs and rotate creds.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated SQLi allows attackers to read/modify DB, exfiltrate data, create admin accounts, and potentially fully compromise sites.
Immediate action required
- affected<= 1.6.12.10
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.