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PatchSiren cyber security CVE debrief

CVE-2026-39694 NSquared CVE debrief

A Missing Authorization vulnerability was found in Simply Schedule Appointments, allowing for Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Simply Schedule Appointments versions from n/a through 1.6.10.2. The vulnerability has a CVSS score of 5.3 and is classified as MEDIUM severity. The CVE record was published on 2026-04-08T09:16:41.783Z and last modified on 2026-07-24T20:10:00.147Z.

Vendor
NSquared
Product
Simply Schedule Appointments
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-08
Original CVE updated
2026-07-24
Advisory published
2026-04-08
Advisory updated
2026-07-24

Who should care

Users of Simply Schedule Appointments versions from n/a through 1.6.10.2 should be aware of this MEDIUM severity vulnerability and take necessary actions to protect their deployments. This includes verifying affected scope, applying vendor remediation if available, and monitoring for potential exploitation attempts.

Technical summary

The CVE-2026-39694 vulnerability has a CVSS score of 5.3 and is classified as MEDIUM severity. It was published on 2026-04-08T09:16:41.783Z and last modified on 2026-07-24T20:10:00.147Z. The vulnerability is related to a Missing Authorization issue in Simply Schedule Appointments, which could allow for Exploiting Incorrectly Configured Access Control Security Levels. Users of Simply Schedule Appointments should be aware of this vulnerability and take necessary actions.

Defensive priority

MEDIUM severity vulnerability requiring attention and immediate action

Recommended defensive actions

  • Inventory and verify Simply Schedule Appointments versions
  • Apply vendor remediation if available
  • Monitor for potential exploitation attempts
  • Implement compensating controls if necessary
  • 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 CVE record was published on 2026-04-08T09:16:41.783Z and last modified on 2026-07-24T20:10:00.147Z. The NVD entry is currently Deferred. The vulnerability affects Simply Schedule Appointments versions from n/a through 1.6.10.2. Users should verify their deployments and monitor for potential exploitation attempts.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-39694 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-39694

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-39694 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-39694

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

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.