CVE-2026-92245 croixhaug CVE debrief

Who should care

Defenders responsible for WordPress installations using the Simply Schedule Appointments plugin should assess exposure and prioritize verification and remediation efforts to protect customer PII and appointment data. This includes reviewing compensating controls, verifying exposure, and implementing security measures to prevent unauthorized access or modifications to appointment records.

Why it matters

The Simply Schedule Appointments plugin for WordPress has a high-severity vulnerability allowing Sensitive Information Exposure and unauthorized appointment deletion. Defenders should prioritize verification, remediation, and compensating controls to protect customer PII and appointment data.

• Customer PII, including names, email addresses, phone numbers, and custom form field data, may be exposed to unauthorized parties.
• Per-appointment public_token values may be leaked, allowing unauthorized deletion of appointments.
• Defenders must verify exposure and assess the impact on their systems.
• Remediation priority is high due to the sensitive nature of the exposed information.

Technical summary

The Simply Schedule Appointments plugin for WordPress is vulnerable to Sensitive Information Exposure due to inadequate handling of the 'recursive' parameter. This allows unauthenticated attackers to extract customer PII, including names, email addresses, phone numbers, and custom form field data stored in appointment records, as well as per-appointment public_token values. These leaked tokens also enable unauthenticated attackers to delete arbitrary appointments via the DELETE /wp-json/ssa/v1/appointments/{id} endpoint.

Defensive priority

Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems, especially those using the Simply Schedule Appointments plugin.

Recommended defensive actions

• Verify the version of the Simply Schedule Appointments plugin and update to a patched version if necessary
• Assess exposure of customer PII and per-appointment public_token values
• Implement compensating controls to protect sensitive information
• Monitor for unauthorized access or modifications to appointment records
• Review relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The vulnerability was reported by [email protected] and is documented in various source references, including WordPress plugin code reviews. The Simply Schedule Appointments plugin for WordPress has a Sensitive Information Exposure vulnerability due to inadequate handling of the 'recursive' parameter, allowing unauthenticated attackers to extract customer PII and per-appointment public_token values. Evidence is limited to reporter claims and source-provided references; defenders should verify exposure and assess impact.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.