CVE-2026-84764
Unauthenticated CSRF in Simply Schedule Appointments plugin allows forged state changes.
Is CVE-2026-84764 being exploited?
Not confirmed. CVE-2026-84764 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 0.14% probability of exploitation in the next 30 days.
How severe is CVE-2026-84764?
CVE-2026-84764 is rated High with a CVSS score of 8.8. 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-2026-84764?
Yes. A fix has been recorded for CVE-2026-84764. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-84764 affect?
CVE-2026-84764 affects Simply Schedule Appointments WordPress plugin <= 1.6.12.23, 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-2026-84764?
Update plugin to fixed version and verify WP nonce checks.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can forge state-changing requests to modify plugin settings, create/modify appointments, or tamper with site data.
Patch when possible
- affected<= 1.6.12.23
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.