Is CVE-2026-39495 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-39495 being exploited in the wild.

How severe is CVE-2026-39495?

High severity, with a CVSS score of 8.5, published 8 April 2026.

Which products and versions are affected?

NSquared Simply Schedule Appointments <= 1.6.9.27.

Is there a fix for CVE-2026-39495?

A patch was published on 2026-06-17: Patch confirmed available in version 1.6.9.29 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-39495 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-39495?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-39495: NSquared Simply Schedule Appointments SQL injection

Q: Is there a fix for CVE-2026-39495?

A patch was published on 2026-06-17: Patch confirmed available in version 1.6.9.29 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-39495 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-39495?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-39495 · Severity: high · CVSS 8.5 · Published 2026-04-08

Simply Schedule Appointments is a popular WordPress plugin used by businesses to manage customer bookings and schedules. A security vulnerability in this plugin allows an attacker with basic user permissions to interact directly with the website's database. This could lead to the theft of sensitive customer information or unauthorized access to internal site data.

Quick answers

Is CVE-2026-39495 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-39495 being exploited in the wild.
How severe is CVE-2026-39495?: High severity, with a CVSS score of 8.5, published 8 April 2026.
Which products and versions are affected?: NSquared Simply Schedule Appointments <= 1.6.9.27.
Is there a fix for CVE-2026-39495?: A patch was published on 2026-06-17: Patch confirmed available in version 1.6.9.29 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-39495 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-39495?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Blind SQL Injection vulnerability exists in the NSquared Simply Schedule Appointments plugin for WordPress due to improper neutralization of special elements used in SQL commands. The flaw is present in versions up to and including 1.6.9.27. An attacker with 'Contributor' level privileges or higher can exploit this vulnerability via network requests to execute arbitrary SQL queries. This allows for the unauthorized extraction of sensitive data from the database. The issue has been addressed in version 1.6.9.29.

Affected products

NSquared Simply Schedule Appointments <= 1.6.9.27

Timeline

2026-02-24: other: Vulnerability reported by researcher daroo
2026-03-26: advisory: Patchstack published advisory and assigned PSID 4f8f48f2da21
2026-04-08: disclosed: CVE-2026-39495 published
2026-06-17: patched: Patch confirmed available in version 1.6.9.29

References

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